Multiligual Drupal 7 website

I want to realize a multilingual Drupal 7 website. I have only a .com domain and i would like to show different data and a different frontend language for each page. I don't want to change the URL so that its de.domain.com or something. I want that domain always looks same but if someone visits site from another country then it should dispaly data only for the specific region and also a different frontend language. How can I do this?

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