In my view, environmental changes often lead to global migration, because people need particular conditions to live. So the most suitable option is: <span>A. Environmental changes forced people to migrate to other areas. The number of environment migrants still grows and by 2050, in about 200 million people will leave their homes because of environmental changes.</span>
Indians had no immunity to European diseases
This fact was one of the main causes for the decimation of the Native American population. The Indians simply never encountered the European diseases and their bodies had not antibodies to fight them off.
Hope this helped!
~Just a girl in love with Shawn Mendes
It was the peaceful overthrow of King James the 2nd By William and Mary
