What is the balanced of trade and why did countries want a favorable balance of trade?

The balance of trade is the difference between the monetary value of a nation's exports and imports over a period of time. Nations want to ensure they have a favorable balance of trade in order balance trade between themselves and other nations. Unfavorable balances mean a lack of equilibrium between imports and exports.

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.

i think the answer is   b.