Why do historians continue to gather historical evidence for even well-known events

In the past, most historians would have said no, but recently, definitions of historical significance have changed. The past is everything that ever happened to anyone anywhere. There is much too much history to remember all of it. ... World War II passes the test for historical significance in this sense.

Explanation:

because it is

it would have to be gasioline

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.