diff --git a/.gitignore b/.gitignore
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index 0000000..30c8834
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+# composer package patch
+vendor/
+composer.lock
+
+# Windows Files
+Thumbs.db
+
+# OSX
+.DS_Store
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
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index 0000000..b4c8a88
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2019, dynamikaweb
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
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index 0000000..86803f8
--- /dev/null
+++ b/README.md
@@ -0,0 +1,31 @@
+dynamikaweb/php-brazil-info 
+===========================
+[![Latest Stable Version](https://img.shields.io/github/v/release/dynamikaweb/php-brazil-info)](https://github.com/dynamikaweb/php-brazil-info/releases)
+[![Total Downloads](https://poser.pugx.org/dynamikaweb/php-brazil-info/downloads)](https://packagist.org/packages/dynamikaweb/php-brazil-info)
+[![License](https://img.shields.io/github/license/dynamikaweb/php-brazil-info)](https://github.com/dynamikaweb/php-brazil-info/blob/master/LICENSE)
+
+Installation
+------------
+The preferred way to install this extension is through [composer](http://getcomposer.org/download/).
+
+Either run
+
+```SHELL
+$ composer require dynamikaweb/php-brazil-info "*"
+```
+
+or add
+
+```JSON
+"dynamikaweb/php-brazil-info": "*"
+```
+
+to the `require` section of your `composer.json` file.
+
+How to Use
+----------
+```PHP
+use dynamikaweb\brazilinfo\State as BrazilStates;
+
+print_r (BrazilStates::list())
+```
\ No newline at end of file
diff --git a/composer.json b/composer.json
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--- /dev/null
+++ b/composer.json
@@ -0,0 +1,32 @@
+{
+    "name": "dynamikaweb/php-brazil-info",
+    "description": "helper with basic information about brazil",
+    "type": "yii2-extension",
+    "keywords": [
+        "dynamika",
+        "brazil",
+        "brasil"
+    ],
+    "license": "BSD-3-Clause",
+    "authors": [
+        {
+            "name": "RodrigoDornelles",
+            "email": "rodrigo@dornelles.me",
+            "role": "Developer"
+        }
+    ],
+    "support": {
+        "issues": "http://github.com/dynamikaweb/php-brazil-info/issues",
+        "source": "http://github.com/dynamikaweb/php-brazil-info"
+    },
+    "require": {
+        "php": ">=5.5.0"
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": false,
+    "autoload": {
+        "psr-4": {
+            "dynamikaweb\\brazilinfo\\": "src"
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/States.php b/src/States.php
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index 0000000..b43f87c
--- /dev/null
+++ b/src/States.php
@@ -0,0 +1,33 @@
+<?php 
+
+namespace dynamikaweb\brazilinfo;
+
+/**
+ * States
+ * 
+ * @var array LIST_ACRON abbreviations of the Brazilian states
+ * @var array LIST_NAMES full name of Brazilian states
+ */
+class States 
+{
+    const LIST_ACRON = [
+        'AC', 'AL', 'AP', 'AM', 'BA', 'CE', 'DF', 'ES', 'GO', 'MA', 'MT', 'MS', 'MG', 'PA', 'PB', 'PR', 'PE', 'PI', 'RJ', 'RN', 'RS', 'RO', 'RR', 'SC', 'SP', 'SE', 'TO'
+    ];
+
+    const LIST_NAMES = [
+        'Acre', 'Alagoas', 'Amapá', 'Amazonas', 'Bahia', 'Ceará', 'Distrito Federal', 'Espírito Santo', 'Goiás', 'Maranhão', 'Mato Grosso', 'Mato Grosso do Sul', 'Minas Gerais', 'Pará', 'Paraíba', 'Paraná', 'Pernambuco', 'Piauí', 'Rio de Janeiro', 'Rio Grande do Norte', 'Rio Grande do Sul', 'Rondônia', 'Roraima', 'Santa Catarina', 'São Paulo', 'Sergipe', 'Tocantins'
+    ];
+
+    /**
+     * keys as acronyms and names as values list
+     *
+     * @return array
+     */
+    public static function list()
+    {
+        return array_combine(
+            self::LIST_ACRON,
+            self::LIST_NAMES
+        );
+    }
+}
\ No newline at end of file