Which of the following definitions best describes an enclave?
a. a separate part of a city dedicated largely to one group
b. an industrial neighborhood in a manufacturing zone
c an area around a city that has not been influenced by immigrants
d. a region of a city that was established as off-limits to immigrants

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.

union blockade

explanation:

the union blockade in the american civil war was a naval strategy by the united states to prevent the confederacy from trading.

the blockade was proclaimed by president abraham lincoln in april 1861, and required the monitoring of 3,500 miles (5,600 km) of atlantic and gulf coastline, including 12 major ports, notably new orleans and mobile. those blockade runners fast enough to evade the union navy could only carry a small fraction of the supplies needed. they were operated largely by british citizens, making use of neutral ports such as havana, nassau and bermuda. the union commissioned around 500 ships, which destroyed or captured about 1,500 blockade runners over the course of the war.

(e) a major consequence of the election was that several southern states