diff --git a/app/build.gradle b/app/build.gradle
index 76f07ce..6141f7a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -38,7 +38,25 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'com.google.android.material:material:1.2.1'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.2.2'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.2.2'
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
-}
\ No newline at end of file
+
+    // Retrofit
+    implementation 'com.google.code.gson:gson:2.8.4'
+    implementation 'com.squareup.retrofit2:retrofit:2.3.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
+    implementation 'com.squareup.okhttp3:logging-interceptor:3.8.0'
+    implementation "com.android.support:cardview-v7:29.1.1"
+    implementation 'com.android.support:recyclerview-v7:29.1.1'
+    implementation 'com.squareup.picasso:picasso:2.71828'
+
+    //Picasso
+    implementation 'com.squareup.picasso:picasso:2.71828'
+    implementation 'com.squareup.okhttp:okhttp:2.2.0'
+    implementation 'com.squareup.okhttp:okhttp-urlconnection:2.2.0'
+}
+
+apply plugin: 'kotlin-android-extensions'
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 3235640..2688741 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,14 +1,19 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.example.ca_contest">
-
+    <uses-permission android:name="android.permission.INTERNET"/>
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
+        android:usesCleartextTraffic="true"
         android:theme="@style/Theme.CA_Contest">
+        <activity
+            android:name=".CountrySelectorActivity"
+            android:label="@string/title_activity_country_selector"
+            android:theme="@style/Theme.CA_Contest.NoActionBar"></activity>
         <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
diff --git a/app/src/main/java/com/example/ca_contest/CountrySelectorActivity.kt b/app/src/main/java/com/example/ca_contest/CountrySelectorActivity.kt
new file mode 100644
index 0000000..139c2cb
--- /dev/null
+++ b/app/src/main/java/com/example/ca_contest/CountrySelectorActivity.kt
@@ -0,0 +1,74 @@
+package com.example.ca_contest
+
+import com.example.ca_contest.adapters.CountryAdapter
+import android.app.ProgressDialog
+import android.content.Intent
+import android.os.Bundle
+import android.view.KeyEvent
+import android.view.View
+import android.widget.Button
+import android.widget.EditText
+import android.widget.TextView
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.example.ca_contest.api.ApiClient
+import com.example.ca_contest.api.Country
+import kotlinx.android.synthetic.main.activity_country_selector.*
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
+import kotlin.collections.ArrayList
+
+
+class CountrySelectorActivity : AppCompatActivity() {
+
+    private var data: ArrayList<Country> = ArrayList()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setContentView(R.layout.activity_country_selector)
+
+        // Progress Bar
+        val progressDialog = ProgressDialog(this)
+        progressDialog.setTitle("Récupération des pays...")
+        progressDialog.setCancelable(false)
+        progressDialog.show()
+
+        // Initialize Recycler
+        val recycler = findViewById<RecyclerView>(R.id.list)
+        recycler.setHasFixedSize(true)
+
+        val layoutManager = LinearLayoutManager(this)
+        recycler.layoutManager = layoutManager
+
+        val adapter = CountryAdapter(data)
+        recycler.adapter = adapter
+
+        // Fetch Countries
+        ApiClient.getClient.getCountries().enqueue(object : Callback<List<Country>> {
+            override fun onResponse(call: Call<List<Country>>?, response: Response<List<Country>>?) {
+                progressDialog.dismiss()
+                data.addAll(response!!.body()!!)
+                adapter.update(data.clone() as ArrayList<Country>)
+                recycler.adapter?.notifyDataSetChanged()
+            }
+
+            override fun onFailure(call: Call<List<Country>>?, t: Throwable?) {
+                progressDialog.dismiss()
+            }
+        })
+
+
+        // Input Text and Button
+        val textView = findViewById<TextView>(R.id.text)
+        var btn = findViewById<Button>(R.id.validate)
+        btn.setOnClickListener {
+            adapter.update((data.filter { country -> country.name.contains(textView.text, true) } as ArrayList<Country>))
+            recycler.adapter?.notifyDataSetChanged()
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/ca_contest/MainActivity.kt b/app/src/main/java/com/example/ca_contest/MainActivity.kt
index 8830968..8dc40d6 100644
--- a/app/src/main/java/com/example/ca_contest/MainActivity.kt
+++ b/app/src/main/java/com/example/ca_contest/MainActivity.kt
@@ -1,11 +1,19 @@
 package com.example.ca_contest
 
+import android.content.Intent
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.widget.Button
 
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+        var btn = findViewById<Button>(R.id.btnStartAnotherActivity)
+        btn.setOnClickListener {
+            val intent = Intent(this, CountrySelectorActivity::class.java)
+            // start your next activity
+            startActivity(intent)
+        }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/ca_contest/adapters/CountryAdapter.kt b/app/src/main/java/com/example/ca_contest/adapters/CountryAdapter.kt
new file mode 100644
index 0000000..1c3d458
--- /dev/null
+++ b/app/src/main/java/com/example/ca_contest/adapters/CountryAdapter.kt
@@ -0,0 +1,71 @@
+package com.example.ca_contest.adapters
+
+import com.example.ca_contest.R
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import android.widget.Toast
+import androidx.recyclerview.widget.RecyclerView
+import com.example.ca_contest.api.Country
+import com.squareup.picasso.Picasso
+
+class CountryAdapter(list: ArrayList<Country>) : RecyclerView.Adapter<CountryAdapter.CountryViewHolder>() {
+
+    private var list: ArrayList<Country> = ArrayList()
+
+    init {
+        this.list = list
+    }
+
+    // Create the view Holder
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): CountryViewHolder {
+        val viewMemo: View =
+            LayoutInflater.from(parent.context).inflate(R.layout.country_selector_item, parent, false)
+        return CountryViewHolder(viewMemo)
+    }
+
+    // Bind each items
+    override fun onBindViewHolder(holder: CountryViewHolder, position: Int) {
+        holder.name?.text = list[position].name
+        holder.capital?.text = "Capital : " + list[position].capital
+        holder.region?.text = "Continent : " + list[position].region
+        Picasso.get()
+                .load("http://www.geognos.com/api/en/countries/flag/" + list[position].alpha2Code + ".png")
+                .into(holder.image!!)
+    }
+
+    // Update the list
+    fun update(list: ArrayList<Country>) {
+        this.list = list
+    }
+
+    override fun getItemCount(): Int {
+        return list.size
+    }
+
+    inner class CountryViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        var name: TextView? = null
+        var capital: TextView? = null
+        var region: TextView? = null
+        var image: ImageView? = null
+
+        init {
+            name = itemView.findViewById(R.id.name)
+            capital = itemView.findViewById(R.id.capital)
+            region = itemView.findViewById(R.id.region)
+            image = itemView.findViewById(R.id.image)
+
+            itemView.setOnClickListener {
+                val context = itemView.context
+
+                // Intent to Calendar
+                Toast.makeText(
+                    context, name?.text, Toast.LENGTH_LONG
+                ).show()
+            }
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/ca_contest/api/ApiClient.kt b/app/src/main/java/com/example/ca_contest/api/ApiClient.kt
new file mode 100644
index 0000000..3351896
--- /dev/null
+++ b/app/src/main/java/com/example/ca_contest/api/ApiClient.kt
@@ -0,0 +1,35 @@
+package com.example.ca_contest.api
+
+import com.google.gson.GsonBuilder
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+
+object ApiClient {
+
+    var BASE_URL:String="https://restcountries.eu/"
+    val getClient: ApiInterface
+        get() {
+
+            // Initialize JSON Builder
+            val gson = GsonBuilder()
+                .setLenient()
+                .create()
+            val interceptor = HttpLoggingInterceptor()
+            interceptor.level = HttpLoggingInterceptor.Level.BODY
+            val client = OkHttpClient.Builder().addInterceptor(interceptor).build()
+
+            // Initialize Retrofit
+            val retrofit = Retrofit.Builder()
+                .baseUrl(BASE_URL)
+                .client(client)
+                .addConverterFactory(GsonConverterFactory.create(gson))
+                .build()
+
+            // return the response a a Model
+            return retrofit.create(ApiInterface::class.java)
+
+        }
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/ca_contest/api/ApiInterface.kt b/app/src/main/java/com/example/ca_contest/api/ApiInterface.kt
new file mode 100644
index 0000000..752acb1
--- /dev/null
+++ b/app/src/main/java/com/example/ca_contest/api/ApiInterface.kt
@@ -0,0 +1,11 @@
+package com.example.ca_contest.api
+
+import retrofit2.Call
+import retrofit2.http.GET
+
+interface ApiInterface {
+
+    @GET("rest/v2/all")
+    fun getCountries(): Call<List<Country>>
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/ca_contest/api/Country.kt b/app/src/main/java/com/example/ca_contest/api/Country.kt
new file mode 100644
index 0000000..5e27dc0
--- /dev/null
+++ b/app/src/main/java/com/example/ca_contest/api/Country.kt
@@ -0,0 +1,21 @@
+package com.example.ca_contest.api
+
+import com.google.gson.annotations.Expose
+import com.google.gson.annotations.SerializedName
+
+data class Country(
+    @Expose
+    @SerializedName("name")
+    val name: String,
+
+    @Expose
+    @SerializedName("capital")
+    val capital: String,
+
+    @Expose
+    @SerializedName("region")
+    val region: String,
+    @Expose
+    @SerializedName("alpha2Code")
+    val alpha2Code: String
+) {}
\ No newline at end of file
diff --git a/app/src/main/kotlin/CA_Contest/App.kt b/app/src/main/kotlin/CA_Contest/App.kt
deleted file mode 100644
index 6187ae3..0000000
--- a/app/src/main/kotlin/CA_Contest/App.kt
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
- * This Kotlin source file was generated by the Gradle 'init' task.
- */
-package CA_Contest
-
-class App {
-    val greeting: String
-        get() {
-            return "Hello World!"
-        }
-}
-
-fun main() {
-    println(App().greeting)
-}
diff --git a/app/src/main/res/layout/activity_country_selector.xml b/app/src/main/res/layout/activity_country_selector.xml
new file mode 100644
index 0000000..50d65c9
--- /dev/null
+++ b/app/src/main/res/layout/activity_country_selector.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".CountrySelectorActivity">
+
+    <EditText
+        android:id="@+id/text"
+        android:layout_width="325dp"
+        android:layout_height="40dp"
+        android:background="#eee"
+        android:hint="Nom du pays"
+        android:inputType="textCapSentences"
+        android:maxLines="1"
+        android:textColor="@android:color/black"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/validate"
+        android:layout_width="0dp"
+        android:layout_height="40dp"
+        android:background="#eee"
+        android:text="OK"
+        android:textColor="@android:color/white"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/text"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/list"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/text"
+        tools:layout_editor_absoluteX="16dp" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 4fc2444..188e4b1 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -15,4 +15,15 @@
         app:layout_constraintRight_toRightOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <Button
+        android:id="@+id/btnStartAnotherActivity"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="48dp"
+        android:background="#397bb2"
+        android:padding="20sp"
+        android:text="Start Another Activity"
+        android:textColor="#FFF"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:layout_editor_absoluteX="86dp" />
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/country_selector_item.xml b/app/src/main/res/layout/country_selector_item.xml
new file mode 100644
index 0000000..0bf0ce9
--- /dev/null
+++ b/app/src/main/res/layout/country_selector_item.xml
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <ImageView
+        android:id="@+id/image"
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="1"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        tools:srcCompat="@tools:sample/avatars" />
+
+    <TextView
+        android:id="@+id/name"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textColor="@android:color/black"
+        app:layout_constraintStart_toEndOf="@+id/image"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="Nom Pays" />
+
+    <TextView
+        android:id="@+id/capital"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textColor="@android:color/black"
+        app:layout_constraintStart_toEndOf="@+id/image"
+        app:layout_constraintTop_toBottomOf="@+id/name"
+        tools:text="Capital: Capital" />
+
+    <TextView
+        android:id="@+id/region"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="1dp"
+        android:textColor="@android:color/black"
+        app:layout_constraintStart_toEndOf="@+id/image"
+        app:layout_constraintTop_toBottomOf="@+id/capital"
+        tools:text="Continent: Continent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/navigation/nav_graph.xml b/app/src/main/res/navigation/nav_graph.xml
new file mode 100644
index 0000000..1cda0e3
--- /dev/null
+++ b/app/src/main/res/navigation/nav_graph.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/nav_graph"
+    app:startDestination="@id/FirstFragment">
+
+    <fragment
+        android:id="@+id/FirstFragment"
+        android:name="com.example.ca_contest.FirstFragment"
+        android:label="@string/first_fragment_label"
+        tools:layout="@layout/fragment_first">
+
+        <action
+            android:id="@+id/action_FirstFragment_to_SecondFragment"
+            app:destination="@id/SecondFragment" />
+    </fragment>
+    <fragment
+        android:id="@+id/SecondFragment"
+        android:name="com.example.ca_contest.SecondFragment"
+        android:label="@string/second_fragment_label"
+        tools:layout="@layout/fragment_second">
+
+        <action
+            android:id="@+id/action_SecondFragment_to_FirstFragment"
+            app:destination="@id/FirstFragment" />
+    </fragment>
+</navigation>
\ No newline at end of file
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
new file mode 100644
index 0000000..125df87
--- /dev/null
+++ b/app/src/main/res/values/dimens.xml
@@ -0,0 +1,3 @@
+<resources>
+    <dimen name="fab_margin">16dp</dimen>
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 1f8593b..fffe72d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,12 @@
 <resources>
     <string name="app_name">CA_Contest</string>
+    <string name="title_activity_country_selector">CountrySelectorActivity</string>
+    <!-- Strings used for fragments for navigation -->
+    <string name="first_fragment_label">First Fragment</string>
+    <string name="second_fragment_label">Second Fragment</string>
+    <string name="next">Next</string>
+    <string name="previous">Previous</string>
+
+    <string name="hello_first_fragment">Hello first fragment</string>
+    <string name="hello_second_fragment">Hello second fragment. Arg: %1$s</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 253b296..e93552b 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -13,4 +13,13 @@
         <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
         <!-- Customize your theme here. -->
     </style>
+
+    <style name="Theme.CA_Contest.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+
+    <style name="Theme.CA_Contest.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
+
+    <style name="Theme.CA_Contest.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
 </resources>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 6603e52..1537418 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,8 +6,9 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath "com.android.tools.build:gradle:4.1.1"
+        classpath 'com.android.tools.build:gradle:4.1.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath "org.jetbrains.kotlin:kotlin-android-extensions:$kotlin_version"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index e1289f9..3094fdb 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Fri Feb 19 09:41:29 CET 2021
+#Fri Feb 19 10:26:45 CET 2021
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip