This country was a Portuguese colony for 400 years and recently gained independence in 1991 after a UN democratic plebiscite. What country is this?

This country is Namibia.

This country is found in South East Asia Region

I apologize for the confusion in my previous response. The country is actually East Timor.

This country is found in the Asia continent

I apologize for the error in my previous responses. The country is actually East Timor, also known as Timor-Leste, which is located in Southeast Asia.