I think this would be the Philadelphia and Lancaster Turnpike
Answer:
the use of poison gas and machine guns
Explanation:
Aerial attacks weren't really a thing, unrestricted submarine warfare was a reason why the US joined the war but not a factor in high casualty rates, and blimps using direct artillery fire isnt as practical as machine guns and poison gas
Santa cruz in 1791. Hope this helps! Let me know if you need more help!
Answer:
The high incidence of disease spread from Europeans to
American Indian populations
weakened American Indian tribes significantly, making them more vulnerable to European invasion.
Explanation:
The population of American Indian tribes was greatly decimated by diseases, especially smallpox and other communicable diseases. Most of the diseases were brought by the Europeans who had developed immunity to the diseases, and as a result did not suffer from the diseases but were able to spread the diseases whenever they had contact with the native Indian tribes.