Well, if these people are not satisfied, they can have two ways, either to be part of a union and make strikes and disaster, or second, to write a letter to the government explaining how they feel, and they should make sure the letter is signed by a notary, then it will have more importance.
Answer:
B. to keep invaders out
Explanation:
The wall was built to help keep out northern invaders like the Mongols. Smaller walls had been built over the years, but the first Emperor of China, Qin Shi Huang, decided that he wanted a single giant wall to protect his northern borders.
I really hope this helps if not use the comments please
The Equator, or line of 0 degrees latitude
January 3, 1870
That's when they started the construction
Hope I helped
