The notion that space and time are relative to the person measuring them was first articulated in .

Einstein's theory of general relativity

Explanation:

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.

enhanced benefits or fringe benefits are supplementary additions employers offer to employees in addition to their wages. these benefits, both monetary and non-monetary are offered to boost employee morale. benefits