Question

Northern China built the Great Wall to protect itself from the invasions of the (Touman, Xiongnu, Saka, Scythian.) nomads?

Answer 1

The correct answer is Xiongnu

This was a tribe of Mongolian people that constantly fought wars with northern China. Touman was a a ruler of one of the tribes who became so important that he became the ruler of all the tribes which was called a chanyu. The wall was built to protect from entering China.