Why do you think the eastern half of the empire survived

Because of the organization and capable leadership of the empire.

Explanation:

Byzantium did not survive by "mere luck." Byzantium has maintained thanks to capable leaders, an organization, skilled diplomats and an excellent military organization. True, he did not possess "that splendour" as the Western Roman Empire at its height, but it is wrong to think that thanks to luck, the empire was maintained for almost a thousand years after the fall of the Western Roman Empire. The great French Byzantologist and historian Charles Diehl says "The Byzantine Empire was a captive of Christianity in the east, against the unbelievers it saved Europe in a few moments by its inferiority, in the Middle Ages ".

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.

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.