The crusades were fought for the control of several cities and ports, but the main target was a. antioch c. jerusalem b. acre d. damascus

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

this is a good question! i'll do some research and come back when i have the answer!

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.