Which of the following are duties of national governments? i. protect the citizens ii. provide public services iii. establish and enforce rules and laws a. i. and ii. only b. i. and iii. only c. ii. and iii. only d. i., ii., and iii.

Iii is the answer because the cops in force the law

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.