Writing made Egypts complex civilization possible because with the ability to write they were able to keep records of lots of things such as production, and take censuses. They would also be able to keep construction records which would help them be able to recreate a certain type of technology or a certain type of building.
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Without the bill of rights, there would be no established set of rights given to the people. Without it, there would be no precedent for the rights of the people, and thus the rights of the people could be bent to whatever the people in power wanted.
Rome's government was destroyed by an invasion from Carthage and ruled from Alexandria.
Rome's government was taken over by a leader who was popular with the common people.
Reformers made positive changes in the republic that led to a new government.
Roman generals created a military government, and the army ruled by force.