I agree with the other person with c
B.
Hitler's main reason for starting World War II was the following:
He wanted to unite the German people
He wanted to expand the land of Germany to feed more people (this is why he demanded Danzig from Poland)
Answer:
stable civilizations most of the time don't need to worry about things like poverty, or sickness. those are things unstable civilizations do need to worry about. When a civilization is stable, they have more time on their hands to create innovations and work. Meanwhile unstable civilizations will need to be worrying about all the things they need to fix.
Explanation:
Good luck :)
Answer:
I'd say the telegraph.
Explanation:
Developed in the 1830s and 1840s by Samuel Morse (1791-1872) and other inventors, the telegraph revolutionized long-distance communication.