Among the options given on the question the correct answer is option A.
Northern.
Explanation: The Great wall of China is one of the ancient piece of architecture which was built in the third century BC by the emperor Qin Shi Huang. The wall was made in the north of China and it was almost 13000 miles long and probably the longest in the world. Prevention of attack from northern side was the major goal of the emperor.
During that time the Inner or central Asian Nomads were the invaders of the China. Fear of this invaders was one of the main reason for building the wall. However the wall was not always able to protect China from the invasion.
Although the Great Wall was made in order to protect the China but it is a symbol of magnificent work of ancient architecture.
The Tariff of 1816, also known as the Dallas Tariff, is notable as the first tariff passed by Congress with an explicit function of protecting U.S. manufactured items from overseas competition
