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Sinking merchant ships.

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Q: What were U-Boats used for in World War 1?
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What were the effects of the German ports being blocked in world war 1?

The Germans then threatened to use only Uboats for war and blew up a few ships.


Why did us enter world world 1?

because of the alliances the US had made previous to the start of the war along with the threat of the German Uboats attacking US civilians and property.


In World War 1?

300,020 airplanes where used in World War 1


Was dynamite used in war?

Yes it was used in World War 1 but it was stopped being used in World War 2


Did world war 1 have tanks?

Yes, world war 1 had tanks. World War 1 was the introduction of battle-ready tanks used in war.


Where horses or donkeys used in World War 2?

Mainly horses were used in World War 2. But donkeys were used in World War 1.


What was used in war?

Dynamite was used in World War 1, but stopped using it during World War 2


What was the bloodiest battles of World War 1?

World War I was the bloodiest war of World War I as it was the only war of World War I. The same can be said of every war.


What war was dynamite used in?

Dynamite was used in World War 1, but stopped using it during World War 2


What was the flying shuttle of World War I?

it was never used in world war 1


What kind of money was used in World War I?

world war 1 money


What was used in World War 2 but not war world 1?

Nuclear bomb.