I would say that they dominated much of South and Southern Asia because of trade.
So sorry but I'm not answering your question cause I really didn't come here to help people, you see I'm a chaotic evil, so I'm pretty sure I'll just go around this website doing the same thing to other people that I'm doing to you. While getting answers myself.
It is Thailand they were never colonized by a European power.
The Georgia changed at the end is going to be A. It became a royal colony.
Hoped this helps! (: