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.
Answer:
The industrial revolution was the force behind this New Imperialism, as it created not only the need for Europe to expand, but the power to successfully take and profitably maintain so many colonies overseas. The industrial revolution created the need for Europe to take over colonies around the world.
in my judgement it is D.. sounds the most correct out of all :)
