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
Answer:
A. Public opinion about the war continued to decline.
Explanation:
American discovered that they could grow their own food because of the native americans who taught them how when they arrived here .
Answer:
A - He wants to strengthen patriotic ideals by reminding his audience of the sacrifices of their forefathers.
Explanation:
Lincoln starts the Gettysburg address by reminding them of what their forefathers did 'four score and seven years ago' - 47 years ago in hopes of stregthening the thought of the Union through their sacrifices so they would not be in vain.
Decennial census of population and housing.
