That doesn’t mean that there wasn’t a lot of (often forced) assimilation or worse involved for that to happen. e.g. it’s not like Japan didn’t have a “native p

That doesn’t mean that there wasn’t a lot of (often forced) assimilation or worse involved for that to happen. e.g. it’s not like Japan didn’t have a “native population” that spoke a different language(s). The colonization just happened a few thousand years earlier than in the Americas.