Steve jobs delivered this famous commencement address in 2005. what is a commencement address? a) a speech given when a president formally accepts his or her role. b) a speech given to declare war. c) a speech given at a college graduation. d) a speech given during a debate.

C is the answer because i looked up his 2005 speech and i was at a college grad 
 

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.