What was the biggest reason that europeans began to explore unknown regions of the world during the age of exploration

How did presidential reconstruction allow black codes to be passed

Aresearcher conducts a focus group to learn about attitudes towards hygiene and disease prevention. two weeks after the focus group, the researcher learns one of the subjects had a heart attack at home and was hospitalized, but made a full recovery. based on dhs regulations, the researcher report this event to the irb? no, this does not need to be reported since the subject had the heart attack when they were home, not at the focus group.no, this does not need to be reported since it is unrelated to participation in the study.no, this does not need to be reported because two weeks have passed.no, this does not need to be reported since the subject recovered.

How did the nazis lead germany to war in europe and, with their collaborators, kill millions—including systematically murdering six million jewish people?