What is the Terracotta Army and why did he build it?

The Terracotta army is a HUGE clay army! There are thousands of life-size soldiers, horses, and chariots in the army guarding Qin Shi Huangdi's grave. In 246 BCE the emperor ordered construction to make the clay soldiers.He ordered them to make it because he thought his body needed to be guarded when he was.To bad Qin Shi Huangdi died before the Terracotta army was finished.