The han dynasty (206 bce – 220 ce) was weakened significantly because of?
a) an invasion of japanese warlords.
b) invasions of mongol tribes led by genghis khan.
c) security threats posed by nomadic tribes to the north.
d) trade imbalances caused by emperor ashoka's reign in india.

The correct option is D

During the Han Dynasty, their kings adopted the teachings of the great philosophers of antiquity, Lao-Tse and Confucius. The government developed well, achieving territorial expansion. Education and writing were encouraged in the newly invented rice paper. A great exchange of merchandise was promoted by the Silk Road, which goes from the Pacific Ocean to Persia and India.

the answer as multiple choice is c

africa, the second-largest continent, is bounded by the mediterranean sea, the red sea, the indian ocean, and the atlantic ocean. it is divided in half almost equally by the equator. the continent includes the islands of cape verde, madagascar, mauritius, seychelles, and comoros.

africa’s physical geography, environment and resources, and human geography can be considered separately.

the origin of the name “africa” is greatly disputed by scholars. most believe it stems from words used by the phoenicians, greeks, and romans. important words include the egyptian word afru-ika, meaning “motherland”; the greek word aphrike, meaning “without cold”; and the latin word aprica, meaning “sunny.”

today, africa is home to more countries than any other continent in the world. these countries are: morocco, western sahara (morocco), algeria, tunisia, libya, egypt, sudan, chad, niger, mali, mauritania, senegal, the gambia, guinea-bissau, guinea, sierra leone, liberia, côte d’ivoire, ghana, burkina faso, togo, benin, nigeria, cameroon, central africa republic, equatorial guinea, gabon, congo, democratic republic of the congo, angola, namibia, botswana, south africa, lesotho, swaziland, mozambique, zimbabwe, zambia, malawi, tanzania, rwanda, burundi, uganda, kenya, somalia, ethiopia, djibouti, eritrea and the island countries of cape verde, madagascar, mauritius, seychelles, and comoros.

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