Answer: The District of Columbia
Explanation:Congress declared the city of Washington in the District of Columbia, the permanent capital of the United States.
Your answer would be that:
White Southerners defended the institution of slavery on a number of fronts. They said that it was necessary and they said that it was not forbidden, but they also argued that it was a positive good.
Southerners argued that slavery was an economic necessity. They argued that there was no way to get anyone to do the sort of labor that was needed for tobacco (and later cotton) cultivation without coercing them.
The Whig party disintegrated mostly over slavery: the northern Whigs were often anti-slavery and the Southern Whigs were mostly slave owners, therefore they would be pro-slavery.
The Republican party was formed in 1854 by the anti-slavery Whigs, together with other politicians -the same year as when the Whig party was dissolved!
the connection is that the anti-slavery Whig Party members that still wanted to be in politics needed a party to work with - so they participated in the creation of the Republican Party.