Toward the end of the Tang Dynasty, the government faced an invasion of armies from the north.
a series of rebellions in the outer areas.
a widespread plague that killed thousands.
a battle among members of the royal family.

the answer is b.2008 and 2012 were presidential election years.

yellow fever and other tropical diseases

explanation:

hitler's  "rise" can be considered to have ended in march 1933, after the reichstag adopted the enabling act of 1933 in that month. president paul von hindenburg had already appointedhitler  as chancellor on 30 january 1933 after a series of parliamentary elections and associated backroom intrigues.