Answer:
The third sentence is a clear example of the concept of social contract.
Explanation:
The idea of social contract became important during the Enlightenment because it established that the power lies in the people and not in the figurehead of government. The French writer Rousseau is one of the Enlightenment thinkers that popularized the term. This concept goes on to explain that if the government is not serving its people and is not acting in the people's best interest, then the people have the right to remove it and place a new government in its place. This can clearly be seen in the third sentence.
An increase in efficiency
Answer:
Egyptian civilization developed along the Nile River in large part because the river’s annual flooding ensured reliable, rich soil for growing crops.
Explanation:
Ancient Egyptians developed wide-reaching trade networks along the Nile, in the Red Sea, and in the Near East.
