I believe it is 2, good luck
<span>The core of the adaptive success characterized by population explosion was the result of: increased food supply
One of the main reason that people have in choosing a place to settle is the resource availability. Areas with largest important natural resources such as foods, water , and land tend to have a larger population compared to the areas that do not.</span>
Answer:
Major problems at the end of the war included labor strikes and race riots, and a lag in the economy due to farmers' debts. The Red Summer of 1919 saw an increase in violence in more than two dozen cities, as returning veterans (both white and African American) competed for jobs.