It increased the size of the United States because it was based on the idea that America was destined by God to expand from the Atlantic to the Pacific, in other words, it encouraged many to expand west.
hope this helps i actually just learned about this in class :)
Answer:
Im not <em>100%</em> sure, but I think it's <em>"-intensive cultivation of land and irrigation methods and a powerful military."</em>
Explanation:
Correct me if I'm wrong, <em>but</em> if you have a <em>textbook</em>, then you can try to use that as a <em>reference</em>.
Westing house invented the air brake, which stopped all the railroad cars at once. This increased safety and allowed longer, faster trains.
