How did the american revolution intensify african americans desire and hope for emancipation?

The American Revolution was an event in which colonists were revolting against the oppressive British government. As they were revolting, they used the Declaration of Independence as a means to support their views. In the Declaration of Independence, it stated that "all men are created equal" and that they are born with certain "unalienable rights." This concept of all men having the right to life, liberty, and the pursuit of happiness struck home to African-Americans.

After reading/hearing about this declaration, the desire for emancipation (aka being freed from slavery) increased. African-Americans felt that this document clearly outlined their rights as Americans. These men hoped that the success of the American Revolution would result in freedom from slavery.

These are the vilest miscreants of the savage race, and must ever remain the

pirates of the Missouri, until such measures are pursued, by our government, as

will make them feel a dependence on its will for their supply of merchandise."

—William Clark, 1804

On August 30, 1806, as the homeward-bound Lewis and Clark expedition swept down the Missouri near present-day Yankton, South Dakota, the explorers caught sight of more than one hundred well-armed Indians lining the northeast river bank. Salutes of greeting were fired by both parties as the expedition pulled up its canoes on the southwest bank. But the initial welcome vanished when Clark discovered that the Indians were Brulé Sioux of Black Buffalo's band. [1] The captain had hoped the Indians were Poncas, Omahas, or perhaps Yankton Sioux . But once their Brulé identity was known, he turned on them with his own brand of invective.

Taking instructions from Clark, the interpreter René Jusseaume shouted across the river that the Sioux were "bad people" and that "if any [came] near our camp we should kill them certainly." In a second barrage, Clark had Jusseaume tell the Brulés that future traders would be "sufficiently strong to whip any vilenous party who dare[d] to oppose them." As a parting shot, Clark notified the Sioux that the Americans had given guns, ammunition, and even a cannon to the Mandans and Hidatsas—weapons that would surely be turned against Brulé raiders. While most of the Indians retreated in the face of Clark's bombast, several warriors remained on a hill, hooting, jeering, and proclaiming their readiness to kill the Americans.

Toward sunset, one man, probably Chief Black Buffalo, came to the water's edge and invited the expedition to come across. Untongarabar, or Black Bull Buffalo, is known in more recent literature as Black Bull. Lewis and Clark consistently called him Black Buffalo. He remained a powerful force in Brulé politics and Missouri River trade until his death in July 1813. When Clark ignored his request, the Indian returned to the top of the hill and angrily struck the ground three times with his gun. "This I am informed," wrote Clark drily, "is a great oath among the Indians."