So was the right thing to engage in wars in Asia and colonize 2/3 of the world?

You've no idea of what these actions have done long term for the countries. Those things are pretty relevant since India form example gained his independence around 70 years ago, not 4 century

And clearly you never read any history book

You are wrong in both your posts, colonialism literally raped every country and stole any wealth that was there to be stolen. Humans, animals, crops, minerals etc.

You should travel around a world a bit especially in affected countries/continents, clearly this enlightening activity evaded you.

Lets not blame other countries for our fucksups, half the income of western families goes to housing and thats noone's fault but ours