Which group of people made up the majority of immigrants to america
before 1870

(d) rivers.

explanation:

civilizations developed around rivers because their waters provided places to hunt and fish. also, as the rivers flooded, the lands around them became fertile. this allowed them to support farming. this is especially true of the nile river, which flooded the same time each year.

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explanation:

as the maasai legends tell, "in the beginning of the world, enkai was the only god: the guardian of rain, fertility, sun, and love. with that love, enkai birthed three sons." solución

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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