How did US involvement in Vietnam change over time?

The United States sent more and more troops to Vietnam in the 1960s, The United States took over the defense of South Vietnam and The Gulf of Tonkin Resolution gave the president more authority to get involved in Vietnam.

Explanation:

Edge 2020

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.