What disasters did colonialism bring to backward areas?

(1), exacerbated the inequality in the world. Through colonial plunder and unequal trade, the great powers concentrated most of the world's capital and wealth, making it develop more rapidly; Relatively speaking, backward countries develop more slowly because of lack of capital and technology, which makes them poorer, that is, their share of wealth in the whole world is getting less and less. (2) Many countries have formed a single economy, and their development and viability are very fragile, which is very unfavorable for their further development and growth. (3) in the process of colonial conquest in capitalist countries, brutal colonial wars, Indian massacres, slave trade, etc. It has brought great disasters to the local people and should be nailed to the shame column of history forever.