Liferay support many languages as you need. All language specific text and storing are done by pulling out in language.properties files. Whenever a page loads, detect the language by liferay and pull up the corresponding language file then display the text in the correct language.
Easily support as many languages.
Have a central location for multiple languages
Translate text effectively.
Setting a default Language and default Country
Put below properties in your system.properties file.
For different languages, set unique URL
Language Unique URL