How did european colonialism affect the countries of southeast asia?

Besides the Europeans, Japanese and the Americans used to colonize Southeast Asian countries as well. Southeast Asians were under the European powers because Asian empires and kingdom declined while the Europeans became stronger. ... During the colonial period, colonial powers had a significant effect on Southeast Asia

Ithink its trade and commernce let me know if im wrong

Germany began the 1930s with an extremely weak economy, but the nazis soon established adictatorship; as a result, the government could pursue militaristic policies without fear of opposition. bycontrast, japan entered the 1930s with a relatively strong economy but a divided government; manypowerful japanese officials opposed military expansion.