What is the main idea of this excerpt?
Harriet worked for a man called Mr. Flint who became very impatient when she did not finish her work.
Harriet waited until after midnight to run down the stairs and jump out of a window into the rain.
Harriet was a frightened young girl who found the faith and courage to leave her home for an unknown life.
Harriet felt very nervous about running away because she did not like being alone in the darkness.

the correct answer is a) egypt and china.

egypt and china are two of the world’s oldest civilizations known by man. both ancient empires have left a great historic and cultural legacy to the world through archeology. both civilzations developed complex social relations, had deep religious beliefs, had dominion of agriculture and left writing records to understand their customs and culture.

among the requirements to consider a civilization, we find urbanization, writing records, a place of residence, agriculture methods, technological specialization, means of transportation, currency, population density, social stratification, and political integration.

use wikipedia, i think they have this.