Answer:
The elevator revolutionised the Vertical transportation and logistics. Prior to that, even though the usual transportation between places was developed mainly because of the advancements in the vehicle and naval transportation, moving things "up" and vertically was supper difficult. Mainly moving people.
The elevator allowed the development of the Skyscraper. Tall buildings that could house thousands of people and eventually that would become the symbol of America.
Explanation:
Answer:
1) New and revolucionary tactics and weapons (european powers use the inspirations in WWI)
2) Number of fallen remains far higher than in any other american war before or after
3) That is was war to prevent seccesion of Southern states and breaking of USA
Answer:
over the specific issue of whether the upper Ohio River valley was a part of the British Empire
