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C. Developing a system of writing

c

Explanation: One of the most important inventions of the Ancient Egyptians was writing. They wrote in hieroglyphics. You can learn more about hieroglyphics here. Writing allowed the Egyptians to keep accurate records and maintain control of their large empire.

in 1989, tiananmen square in beijing was the site of china’s main industries. china’s government headquarters. -pro-democracy demonstrations. (second choice)

i am pretty sure it is a