A really simple to use plugin which provides support for additional languages for your pages and posts. Does not work with custom post types and some themes.
Adds title and content edit boxes for each additional language on edit pages for posts and pages. Translation indicator available for post list on admin panel (can be turned off).
Includes widget and shortcode to generate language selection.
When a language is selected, displays all pages, posts and menus based on selected language. Different actions for untranslated content available in the settings.

A Simple Multilanguage Plugin

Multilanguage support for pages and posts. Displays content based on selected language. Includes widget and shortcode for language selection.

Matheus Martins

Artem Platonov

Just add the country from selectbox and fill in preferable options. 
You can specify URL parameters for switching language or domain.
Explanation:
<ul>
<li>
You have a multilingual blog and want your visitors to be directed to the correct language according to their geographical location.
</li>
<li>
You have specific domains or subdomains for different versions of your site and want your visitors to be directed to the right domain accoring to their geographical location.
</li>
</ul>

Geo Redirect

This plugin allows you to redirect your visitors or switch language according to their country.

A Simple Multilanguage Plugin vs Geo Redirect