The use of submarines during world war i had which of these effects? it gave an advantage to the coastal nations. it made naval battles the key battles of the war. it made it difficult for merchants to bring supplies to the allies. it prevented the central powers from transporting troops.

It made it difficult for merchants to bring supplies to the Allies.

he believed that congress would be better not dealing with "lobbyists", or people who seek to influence (a politician or public official) on an issue, since historically, they had problems with these kinds of people. he thought lobbying produces benefits, but should be carefully monitored.

i believe the correct answer is b.