In korea, a. civil service examinations were based on the lotus sutra. b. some aristocratic yangban became merchants, or even peasants, over time. c. by 1700 the country became predominantly christian as a consequence of european traders and missionaries. d. china ruled the koreans through the chinese emperor's male relatives. e. warfare against japan was constant as the korean kings hoped to make japan a colony.

The correct answer is B) some aristocratic Yangban became merchants, or even peasants, over time.

In Korea, some aristocratic yangban became merchants, or even peasants, over time.

During the Republic period of Korea, before 1945, a Yangban was the educated male aristocrats, considered the elite of the country. They belonged to two distinct classes in the society of Korea. The "muban" or the martial class and the "munban" or the literary class. They studied the teachings of Confucius and were the example of moral conduct in Korea.

copernicus finished the first manuscript of his book, "de revolutionibus orbium coelestium" ("on the revolutions of the heavenly spheres") in 1532. in it, copernicus established that the planets orbited the sun rather than the earth. he laid out his model of the solar system and the path of the planets.