The correct answer would be True. Hope this helps
Answer:
a. the annual population growth rate was much higher than in colonial days.
Explanation:
In early-nineteenth-century America, "the annual population growth rate was much higher than in colonial days."
The above statement is TRUE because, during this period, the population of the United States grew from 5.3 million people in 1800 to 9.6 million in 1820, and eventually by the year 1840, the population grew to 17,069,000 million people.
One of the major reasons for the population upsurge is due to Westward expansion which is influence by Louisiana purchase.
The correct answer is - natural selection.
This is a typical case of natural selection, where we have a group of people that have similar physical traits, that are selected and than isolated from any external influence, so with interbreeding they manage to keep their physical traits for generations to come and thus create a population that resembles their initial ancestors.
The United States wanted to stop its nationalism.
