What was the main thing about the Great Wall of china?

1. With a total length of 21,196.18 km (13,170.70 miles), equal to half the length of the Equator, the Great Wall of China is the longest feat of human engineering.

2. In the main today's wall comprises relics from the Ming Dynasty (1368 - 1644), measuring 8,851.8 km (5,500 miles).

gold discovery in california, and pioneer settlers were sometimes pulled west because they wanted to make a better living. others received letters from friends or family members who had moved west. these letters often told about a good life on the frontier. the biggest factor that pulled pioneers west was the opportunity to buy land.

welcome mark brainliest i am trying to get to the next level.