The Chinese attempted to block its influence by building the great wall.
Answer:
D
Explanation:
The house Un-American Activities Committee, a committee of the U.S. house of representatives, investigated allegations of communist activity in the Useee.S. during the early years of the coldwar
Answer: European diseases were killing millions of Native Americans
Explanation:
The factors that affected Native Americans that is directly implied but not stated in this excerpt is that "European diseases were killing millions of Native Americans".
It should be noted that the mail reason for the European diseases killing millions of Native Americans was because of their low immunity.