I'm assuming that you're asking about the history of slavery in the United States? If so, a good starting point would be the first documented arrival of African indentured servants in the colony of Virginia in 1619, and a solid ending poiint would be the passage of the thirteenth amendment in 1865. In between, some major points to highlight are Eli Whitney introducing the cotton gin in 1793, the ban on importing slaves from Africa in 1808, the Missouri compromise in 1820, the compromise of 1850 about the expansion of slavery into new territories, and the Dred Scott Supreme Court case in 1857.
The answer is <span>a. Henry Clay</span>
The city that <span>had the worst incident of racial violence due to wartime migration was: Detroit, Michigan
The local thought that the migration caused them to lose many job opportunity which lead to the conflict between the local residents and the newcomers. On top of that, many people still haven't accepted the black as a legitimate United States' citizen in that area.</span>
