How can i change my country store ?

If you would like to purchase contents from the App Store of a certain country, your Apple ID/iTunes Store account must be associated with the same country. Example: if your account is in US, you can only purchase in US App/iTunes Store.

If your App Store is showing a country or language that is different from your country, please try the steps on this article to correct it:

http://support.apple.com/kb/HT2242