European nations had new sources of raw materials and other resources.
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During the age of exploration, there was the mass destruction of entire communities of Natives. The Native American genocide included the brutal torturing and murdering of indigenous people.
Answer:
He first reiterated the traditional U.S. policy of neutrality with regard to European wars and conflicts. He then declared that the United States would not accept the recolonization of any country by its former European master, though he also avowed non-interference with existing European colonies in the Americas. I hope this is helpful :)