Europeans were able to trade in a more efficient way. it made it easier for them to trade slaves and other items from Africa to American colonies to Europe
Unrestricted Submarine Warfare.
Germany attacked whatever because of this tactic, also taking out vessels carrying US citizens, which is unacceptable to the US.
During World War I, conscientious objectors were used to support "relief efforts in France," although this was not universally the case, and many remained at home.
Answer:
The guilds paid taxes, helped raise armies, and provided other services for their lords. Hope this Helps :)
Explanation: