Under the Song Dynasty, what did China
become?
A. China became the richest nation on earth.
B. China became the poorest nation on earth.
C. China became totally isolated from the rest of the world.
D. China became the first nation to have a total democratic republic

The Song dynasty ruled Ancient China from 960 to 1279. It followed the Five Dynasties and Ten Kingdoms period. Ancient China was the most advanced civilization in the world during the rule of the Song dynasty. It is famous for its many inventions and advances, but eventually collapsed and was conquered by the Mongol barbarians to the north

Explanation:

mexico south america

explanation:

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.