contestada

the use of submarines during world war 1 had which of these effects

advantage to the coastal nations
made naval battles the key battles of war
made it difficult for merchants to bring supplies
prevented central powers from transporting troops

Respuesta :

mbh292
They made naval battles the key battles of the war because the supplies were coming via sea but submarines sunk them.

They also made trade harder because the submarines especially Germans were basically destroying every ship they encountered.