B. what act start the railroad boom, and how did it do so?

The railroad boom began in 1862, when president Abraham Lincoln signed the Pacific Railway Act. This act offered two companies land along its right of way in order to speed progress. What railroad had a more difficult time with building their rail line due to the Rocky Mountains.

Explanation:

the intolerable acts were punitive laws passed by the british parliament in 1774 after the boston tea party. in great britain, these laws were referred to as the coercive acts.

the award is named for an american naval historian and theorist, rear admiral alfred thayer mahan, united states navy who, through his writing, provided stimulus and guidance to those who share in the defense of the nation.