Because they had no immunity to the diseases, since those diseases had never existed among them prior to European colonization.
because of diseases
Europeans brought diseases that killed much of the Native American population. - Minh
Had no natural protection from diseases brought by Europeans.
Many native Americans succumbed to the diseases brought over by the Europeans, as they had no immunity.
Diseases, largely smallpox, brought by Europeans caused millions of deaths among the native Americans who had no resistance to these foreign diseases.
One main reason that Native Americans were being so rapidly conquered was that the they had not built up any immunities to the diseases that the European settlers had brought with them. These diseases spread wildly and killed many native populations very quickly. Another factor was that most Native American tribes did not believe that land could be owned privately, as in their cultures they had always shared the land as a community resource.
When the Europeans came they passed a disease called smallpox.
Had no natural protection from diseases brought by Europeans.
The Europeans brought new diseases that killed off about 70% of them. The remaining amount were enslaved to work in the mines. Although there was a good side. The Columbian exchange was an exchange of biological products between the two. One of the major one was the potato which single handedly saved Europe from starvation. The Europeans gave diseases and the Amerindians gave food.
diseases
diseases
They weren't - they were just less vulnerable to the European diseases. Native Americans had never encountered those diseases before, so they had no natural defenses against them.