Native Americans and other indigenous peoples have asked this very same question for hundreds of years.
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escaping exploitation
๐ค out of the frying pan into the fire, sometimes ending up in indentured labour ๐ต
Imagine how much slower colonization would have gone without the Reformation and all the religious persecution in Europe. Natives might've been able to build up and modernize if Europeans hadn't been literally fleeing for their lives.
An easier life, might not be THE root cause, but if you live in a state when you couldn't receive welfare, given the opportunity would you move to a state where you could receive welfare?