Judging from the map, how might China have benefited from building the Great Wall?

In total, the Great Wall of China took more than 2,000 years to build - between 770 BC and 1633 AD. However, its construction was completed in stages - spanning over several dynasties and leaderships.

China has a sense of identity for the Chinese. This is one of the biggest advantages that the Great Wall created.

It portrayed Chinas endurance as well as their economical and political power.

The wall was also a great source of protection. Many of the great Chinese dynasties such as the Han, Qin, Ming dynasties benefited from it.

Cheers!

a. the astrolabe could determine the correct latitudinal location of the ship

they were all fought in the middle east during ww1