I think is yes because if they never occurred than no one would discovered or have those things they will have to try to make them by themselves
B. Lincoln had not dealt sternly enough with the southerners.
Answer:
France
Explanation:
Several chemicals were weaponized in WWI and France actually was the first to use gas they deployed tear gas in August 1914.
Answer:
Germany found itself unable to make reparations payments.
B. Hydroelectric.
(Edit: Why did you ask the question if you had the answer?)
