I think its b because people usually say "I plead the fifth"
Advantages—abundant natural resources, a stable government with relatively lax regulations, and a large workforce—made it the dominant industrial power by the 20th century.
B. They didn't have to be built next to streams and bodies of water.
True. Steamboats were much more efficient
It was the "Oregon Train" that brought settlers to the Willamette Valley, sine although there were other smaller trails in the region, this was the most traveled by those wanting to start new lives and businesses in the region.