Setup a Multilingual Site/Exploring the Site
From Joomla! Documentation
How to setup a Multilingual Joomla! Site
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Joomla! allows you to create easily a multilingual website, without having to install any third party extension. In this tutorial, you’ll find a complete walkthrough of the steps involved in creating a multilingual Joomla! site.
Step 8 - Exploring the multilingual site
Congratulations! You have just built your first multilingual website! When the user visits the site using a browser which is set to use the English language, Joomla! will display the site with the English content: all articles and modules that have been assigned to English as their content language. Should visitors wish to see the French version of the site, they just have to click on the French flag icon to display the content in Fench.