A civic duty is the responsibility of a citizen.
According to the Declaration of Independence, every human being living in the United States has the right to be free and decide its own ways in life, and than on the other hand we have the slavery, where people were enslaved, were either slaves for all of their lives or occasionally they were able to buy out their freedom, and they did not decided for their own lives but their owners. These two are the two total contrasting opposites that occurred in the American society, and they show how it is possible that from one negative extreme, the country can be reformed and functioning in another positive extreme.
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Douglas's bill in effect repealed the Missouri Compromise by lifting the ban against slavery in territories north of the 36°30′ latitude. In place of the ban, Douglas offered popular sovereignty, the doctrine that the actual settlers in the territories and not Congress should decide the fate of slavery in their midst.