Why did the u. s. loss the Vietnam war give evidence from sorces and in your own words pls help ​

USA did make many bombing campaigns against North Vietnam, which only alienated the population but could not degrade the fighting force of the Vietcong. ... Support of China /USSR: One of the most crucial reasons for the defeat of the USA was the unflinching support of China and the Soviet Union to the North Vietnam.

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2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."