How do you account for the rise of the African-American
civil rights movement from 1945-1950?

During the period from the end of World War II until the late 1960s, often referred to as America’s “Second Reconstruction,” the nation began to correct civil and human rights abuses that had lingered in American society for a century. A grassroots civil rights movement coupled with gradual but progressive actions by Presidents, the federal courts, and Congress eventually provided more complete political rights for African Americans and began to redress longstanding economic and social inequities. While African-American Members of Congress from this era played prominent roles in advocating for reform, it was largely the efforts of everyday Americans who protested segregation that prodded a reluctant Congress to pass landmark civil rights legislation in the 1960s.76

Explanation:

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

d.prevent the spread of communism outside of eastern europe.