Why was the great wall of china famous? What were the major achievements?

One of Shi Huangdi's more famous public works was the Great Wall. The wall ran along the northern border of China. Shi Huangdi had this built to keep out invaders from the north, the Central Asian warriors. The Chinese were trade partners with them, but there was conflict between them as well.

Why is it famous:

The Great Wall of China is the longest man-made construction in the world. It has a total length of 21,196 kilometers.

The Great Wall of China is the hottest attraction in China.

What were some major achievements:

The wall was made entirely by hand. It was built to protect the Chinese from intruders from different Nomadic Tribes.

Please mark me brainliest and have an amazing day :D

a.

congress passed laws allowing for free passage between states.

when in doubt choose c

it's what my teacher told my class when we were going into psats