That's debatable because Germans used them a lot to prevent trade. Yet they are also 1 of the main reasons the United States entered the war. The United states entered the war because the Germans kept breaking the rules we set and didn't keep their promises with the submarine warfare. So the answer would be yes, they were one of the greatest impacts on World War 1.
Zepplins
Why don't you just Google "World War 1 Submarines?"
_There should be a space between 'the' and 'impact' it should read: "What was the impact of World War 2 on US society?" Soz!_
World War I submarines were primarily used to locate and attack surface cargo and warships.
Submarines changed war. They played a big part of World War I and II.
Zeppelins bro
Yes
Submarines were sometimes referred to as submersibles.
labor-saving devices
They didn't. But "IF" they had sunk the US transports delivering US Troops to Europe...Germany could've won the war...or at least not lost it.
The greatest impact on Canada was as a result of World War II due to Canada's extensive effort in this war as opposed to World War I.
Yes, German submarines were very effective in both world wars. The Germans built excellent submarines and still do.