Answer:
built to protect land from invasions - soldiers in balcony carried crossbows
soldiers with different facial expressions - detailed designs on hard stones
three-part structures used as tombs- built to accompany an emperor in the afterlife.
Step-by-step explanation:
Terracotta soldiers were also known as Terracotta Warriors. Emperor Qin Shi Huang interest in immortality drove him to built life-sized terracotta soldiers for his funerary burial. It consists of horses, chariots, armoured soldiers, archers. The purpose of terracotta warriors was to protect the emperor in his afterlife. According to archaeologists about 8,000 soldiers, 520 horses and 130 chariots used to form the army. Terracotta is a type of pottery which is known for its brownish-red earthenware colour.