what was the purpose of the great wall to me trades and transportation easier to separate warning states to keep out nomads to the north to standardize Chinese world

The main purpose of the Great Wall of China was to protect the Chinese Empire from invasions by nomadic tribes, particularly from the north. It served as a military fortification and defense system. Additionally, it also regulated trade along the Silk Road routes and controlled movement, making it easier for authorities to monitor and tax goods being transported. Although the wall did help standardize the Chinese world by marking their territorial boundaries, its primary goal was defense against external threats.