They raided each other's settlements. When the English first arrived in America, the natives didn't like them settling on their land, and they saw them as a threat. So they attacked, killing settlers.
It is the another range formed by the natural process of the earth surface. After a thousand years, slowly the hills and plateaus turn into a plain land and sea also started to fill by the some debris at the end of Pleistocene period which converts into plain terai. This is how the single country Nepal was formed.
I believe the answer is B.i hope this helps you.Zane
Agriculture is your answer
Hope this helps!
Put very simply, as one muscle contracts, the corresponding muscle relaxes.