Brigham Young

B. was killed by a lynch mob in Illinois in 1844
C.led slave revolt in Virginia in 1831
D.led the Mormons to their settlement in Utah
E.wrote the golden tablets which became the basis for the Mormon faith

I'd say D

An additional factor isolating many Irish immigrants from the rest of the European-American populace was the horror with which many Protestants reacted to the rise of ____________________ immigrants.

European? I'm not sure what would go in this blank

D is not the answer about Brigham Young.

Most Americans at that time had European ancestry. Protestants were horrified by the increase in Roman Catholic immigrants.