•what is an historical idea or event that supports douglas’s point of view?

An historical event that supports Stephen Douglas' point of view regarding slavery in the United States was the Compromise of 1850, in which slavery was left to the popular sovereignty of each state.

Explanation:

Stephen Douglas was an American politician from Illinois. He was a representative, senator, and candidate for president by the Democratic Party in the 1860 elections, losing to Republican Abraham Lincoln.

Douglas was known as an ingenious, skilled, tactical, clever, and effective party leader in the debate and passing of laws. He was a great defender of democracy who firmly believed in the principle of popular sovereignty, especially in issues such as slavery and territorial expansion. As president of the Territories Commission, Douglas dominated the Senate in 1850. He was largely responsible for the Compromise of 1850, which temporarily solved problems arising from slavery.

answer:

it caused mass african migration, african populations to grow, african empires to topple, and racism against slaves to emerge.

the passage of a strict fugitive slave law