C.
I am not too sure- but I am gonna make a pretty well educated guess
During 9/11 George W Bush was president of the United States. He increased intervention by starting the war on terror.
The extent to which environmental factors drove new patterns of migration in the 1750 to 1900 time period was very high and pronounced.
<h3>What is Migration?</h3>
This is the process which involves the movement of people from one place to another to settle down at a new location.
Migration was high in places which had more food, favorable temperature and very little parasites which was why people move to developed countries were on the rise as their chances of survival is high.
Read more about Migration here brainly.com/question/1213023
Many babies were born after the end of the World War II but the recorded year where most baby boomer were born was in 1957. 4.3 million baby boomers that was born was recorded on that year. After 1957, the birth rate slowly declined.
