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.
One of the most important political institutions that has been present in Russia from before 1000AD until the early 1900's is Tsarism. It is a system of rule with a monarch with absolute power that has several subservients to help him control the vast area that comprises Russia. Ivan the 4th is an important example of a Tsar. After 1905, there is also a Russian parliament called the Duma that restricted somewhat the monarch's powers.
It was important because segregation and discrimination had reached a point were it was no longer tolerable To state that African Americans should join the war because a win would be a double victory over racism abroad and at home.
There are several options that could go here, but perhaps the best from the list would be "B. High cost of defending territories <span>outside the United States" because of foreign policy issues. </span>
It’s D, isolation from others