Question

How a country to become an independent​

Answer 1

Colonize a place that isn’t colonized yet, therefore you are the sole owner of it.

Or request permission to secede from the parent country, though agreement or through rebelling

Answer 2

Answer: The first is with the consent of its parent country, that is when the government of the sovereign state which it belongs to allows it to secede, either through agreement between the central government.