A.
Undermine
erode the base or foundation of (a rock formation).
Answer:
The answer would be B.
It contributed to the defeat of Native American tribes by Europeans.
The answer should be a and b
As Europeans moved beyond exploration and into colonization of the Americas, they brought changes to virtually every aspect of the land and its people, from trade and hunting to warfare and personal property. European goods, ideas, and diseases shaped the changing continent.
Answer:
The river NILE made the land fertile through the regions it passed. As we know, Egypt is mostly desert but regions near NILE are good for growing crops.
Mesopotamia also relied on rivers to provide for fertile land, major transportation routes, drinking water and for agricultural purposes.
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