Perhaps the greatest aspect of the Great Awakening in terms of its foreshadowing of 20th century reforms was that of its stance on abolition (and subsequently the rights of African-Americans) and women's rights. These ideals were spread through America in all walks of life long before mainstream rights for African-Americans were even considered a possibility.
A. Xuanzong
Of all the leaders listed, Xuanzong is the only one who ruled in the Tang Dynast, therefore he is the correct answer. Genghis Khan was the leader of the Mongol Empire, Yangdi was of the Sui dynasty and Huizong ruled during the Song dynasty. Therefore, neither B, C nor D can be the correct answer and A is the right choice.
Stuff because stuff caused stuff
Cuba's government experienced a period of economic hardship which is known as the Special Period. This is due to the reason that, before the fall of the Soviet Union, the Cuban government became so dependent on Soviet markets and military aid. Their economy was so dependent to the other which when the Soviet Union collapsed their economy as well collapsed.
Federal because it is above all :)