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).

b hope this

taking a bath requires the most water out of the given options because it takes a significant amount of water in order to fill a bathtub.