U-boats were used primarily to gather information about enemy movements by tracking warships.
protect the German coast from attack by Allied ships and submarines.
resupply troops with guns, ammunition, and food via sea rather than land.
target Allied shipments on passenger ships, warships, and merchant ships.

i would say your answer would be the second option.

hope this !

yes

explanation:

the fighting words doctrine, in united states constitutional law, is a limitation to freedom of speech as protected by the first amendment to the united states constitution. in 1942, the u.s. supreme court established the doctrine by a 9–0 decision in chaplinsky v. new hampshire.

- a government ruled by the people, or assembly. officials monarchy - a single ruler like a king. over time some city-states, like athens would change governments. what this means is that all the citizens voted on all the laws.

which statement explains one of the reasons world war 1 was so much more destructive than earlier conflicts