Mongols affected Ancient China by attacking most of China's north. In the Qin Dynasty, Qin Shi Huangdi joined up smaller walls in the north which became the Great Wall of China
Astrolabe is the astronomical instrument used to measure the altitude of the Sun or stars.
This is false :) aaand sorry they said the answer was to short so im adding this
Answer:
powers are shared across 3 branches and citizens can file grievances
Americans were unfamiliar with the territories of Vietnam and ended up having to search manually, house by house, allowing the Viet Cong to dig escape tunnels and snipe American soldiers.