Fleet

Actually, the relative level of prosperity in America for that time period is unknown and may have been significantly better than what native Americans had to face in years after contact with Europeans. Also, medicine and modern technology could always be acquired from trade. Christians often use human sacrifice in America as if it was something practised on daily basis or as if murder or killing didn't go on in Europe.

It is much like British Colonialist propaganda that apparently Britishers made their colonies better off. When in fact British Empire's inhuman and extremely unfair taxation stratified the colonies into various groups and promoted internal corruption in the colonies. Take India for example. India's economy was 25% of the world economy around 1700 CE but it was just 2.5% in 1947. That's a terrible decline for a country that had experienced relative prosperity for nearly 5000 years of their history. The fact is that Brits did nothing than suck resources out of India. If they led railway lines then it was with purpose of promoting their own interests. At end of the day relative prosperity of Indian subcontinent fell remarkably because of the draining of resources out of the country. Further the society became more stratified into groups and castes because now the society was competing for very limited resources since the British Empire looted or drained the country's resources to a great extent.