<span>It contributed to the desire of secession by many of the southern states</span>
Answer:
A. a separate part of a city dedicated largely to one group
Explanation:
The enclaves represent separate parts of the cities where one group is dominant. This often happens with the migrants, as very often they look to live next to compatriots so that they can communicate and have easier adaptation in the new place. Unfortunately, the enclaves make lot of problems, as the people living in them often don't even try to integrate, but keep their own culture, speak their own language, set their own rules, which results in divisions on ethnic or religious basis.
Abraham Lincoln: Republican Party
John Breckenridge: Democratic Party
Stephen Douglas: Democratic Party
John Bell: Democrat party, Whig party, and constitutional union party