Yes, of course, colonialism was a curse for many countries, but we need to see further. Colonialism only works if a side has a much better technology than the other.
And the fact is that Europe (subjected to harsh winters, global empires and constant wars) had a much better technology. Period.
And that advances in war and travel, were based in lots and lots of solid science, created much before colonialism. You can't build a big ship or a bridge that stands 1000 years without solid math and skills.
Being subjected to a strong religion that is against science o pro-science also played a huge part.
The idea that when in danger of overheating or freeze our brain stop all machines and concentrates only in how to keep our body alive for one hour more is totally reasonable.