Which of these political issues caused the most division in washington, dc, as the united states moved westward in the 19th century?

The correct answer is the expansion of slavery.

When the United States expanded westward through the era of Manifest Destiny, the question remained as to whether these new states would be free or slave states. The US Congress tried several different solutions.

The first one was the Missouri Compromise, which allowed Missouri to enter as a slave state and Maine to enter as a free state. Along with this, the 36'30 line established that any new state north of this line would be a free state. Any new state south of this line would be a slave state.

This held up for about 30 years, until the issue of adding California arised after the Mexican-American War. The Compromise of 1850 solves this problem temporarily. However, the fight over slavery expanding would continue in places like Kansas and Nebraska, ultimately leading to the Civil War.

overtime, the civil rights movement changed in a way that not only it benefited african-americans, but benefited other ethnicity's such as latinos, asians, or women too! that's why the results of the movement be called mixed.

the civil rights movement brought about tremendous changes. no longer were blacks denied the right to vote, to eat, shop, and swim where they , and more importantly, to attend integrated schools. despite its many accomplishments, however, the civil rights movement had its shortcomings. for example, many people, both young and old, lost their lives, homes, jobs, and families. still other individuals were so damaged by psychological trauma that they ceased being productive members of the community. the movement left intact the economic inequities that had contributed to the maintenance of segregation. and finally, racism remained alive and well long after the movement's end. like most movements of its kind, the civil rights movement left behind a mixed legacy of triumph and tragedy.