Do you choose the country you live in at the beginning of X/Y? Or is it based off your DS settings?

Question

If it is chosen at the beginning of the game, can I change it?

Answer 1

You can choose the language of your game when you first start/ restart your copy of X/Y.

However, your region is based on your 3DS' settings, and is region locked to your 3DS' regions.

Nintedo Wiki - regions