In ancient rome they built their roads out from rome towards the frontier of the empire as they conquered
Americas desire to move westward is good because it has much different climate and it prevents it from becoming overcrowded. Two conflicts that occurred are more people wanting to go and people dying on the way to a new state.
The Spanish-american war allowed the United States to connect the two coasts and establish themselves as a force on the new continent. The expansion allowed them to have allies worldwide who traded with the states and this enabled them to accumulate wealth. World War 1 was the cherry on top because it ruined the entire economy of Europe as well as European infrastructure, while US was free to produce and export since it had no economic rivalry with anyone.
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<span>These Progressives joined with business leaders, religious leaders, and other reformers to outlaw the sale and use of alcohol, forming the "temperance movement" which, after a long period of movement, finally succeeded in passing the Prohibition law. </span>