The correct answer is disease.
Many of the Europeans were carrying disease that they had acquired immunity to since the diseases had been rampaging around Europe for centuries.
But the people of the Americas did not have the immunity and it almost wiped them out.
Culture is learned. It is shared. It takes time to develop, is transmitted across generations, and is subject to change. It cannot be isolated. Culture is essential for life. These are the 7 characteristics of culture that this Buzzle article outlines.
She was smart with her techniques using the Underground Railroad to guide slaves to safety