20what were reasons for the u. s. invasion of iraq? a) the united states believed saddam hussein had wmds. b) the united states believed saddam hussein had supported terrorists. c) the united states believed that osama bin laden was hiding in iraq. d) the united states believed saddam hussein had planned the 9/11 attacks.

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.