Many Southerners felt betrayed by President Zachary Taylor because he was a Southerner who favored California's admission as a free state
Answer: That the colonies should break away from British rule
Explanation: It was at a time where the British were unfair to the 13 colonies.
B behavior because it’s more of an action due to his belief
The transcontinental railroad was a key role in the industrial revolution because it was the only way for supplies to get from one part of the country to the other. The train was also the fastest mode of transportation at the time so it was also important for travel. I hope this helped.