Which three tribes occupied regions of the southeast

Why did leaders such as siddhartha gautama abandon hinduism to createbuddhism around 500 bce:

Before the invention of the loom in 1785, textile manufacturing was: a) regulated under the guild system. b) performed by children working in factories. c) produced in rural cottages under a putting-out system. d) conducted by british colonists overseas.

Even though the u.s. declared neutrality, who did most americans side with in wwi?