What were some beliefs systems and philosophies for the qin dynasty

Answer- Legalism was the official philosophy, and other philosophies, such as Confucianism, were suppressed. Shi Huangdi also built the Great Wall of China, roughly 1,500 miles long and guarded by a massive army, to protect the nation against northern invaders. The Qin Dynasty collapsed after only 15 years.
Hope this helps;)

The total amount of new york is equal to 90*