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The German government announced unrestricted submarine warfare against ANY ship sailing into Allied waters would be subject to surprise attack. Along with the German sabotage of Black Tom island powder magazine in 1916, the sinking of the Lusitania with American citizens onboard, and the Zimmerman telegram (German foreign secretary) that encouraged Mexico to ally with Germany and Mexico would win bad the former Mexican territory in the US South West, lead President Wilson to call for war. There were additional reasons, but I feel these were the Big Four.U Boats were causing havoc on the trade routes between the US and Europe by destroying merchant ships. One of the biggest factors was the sinking of the Ocean Liner "Lusitania" by German UBoats, of the 139 US Citizens on board 128 were killed. Also, when Germany began a Submarine Campaign against Britain President Wilson had previously stated he would hold Germany responsible if that were to occur.
At least ~12,000 overall Allied casualties , German casualties were estimated at between 4,000 and 9,000 casualties .
D-Day was the Allied invasion of Normandy, France.
Allied aircraft attacked German targets before D-Day to keep German aircraft on the ground. The Luftwaffe was notable by its absence on the day.
a group of German uboats that hunted Allied and US ships
because some allied ships were carrying contraband
because some allied ships were carrying contraband
The Lusitania was a boat that sailed across the Atlantic Ocean from America to some other Allied Country in Europe. In the Atlantic Ocean the Central Powers (mainly Germany) had UBoats that sank a lot of ships travelling to and fro from the Allied forces. The Lusitainia was sunk on it's voyage to Europe.
The Lusitania was heading to an "allied power" when it got bombed.
U- Boats sank the Lusitania which brought the USA into the war. this caused a huge change in the progress of the war
The sinking of the LUSITANIA ship by German U-Boats. They attacked because Germany found out that the United States was supplying the allied and central powers with firearms.
RMS Lusitania was a White Star ocean liner torpedoed and sunk by the German submarine U20 in 1915. Until then the US had remained neutral in World War 1, but as the Lusitania was a passenger ship, with its passengers including Americans, the sinking eventually led to the US entering the war on the Allied side in 1917.
siegfried was a German line of resistance against allied forces
They were angry with Germany because of the Zimmerman telegram and also remembered such events as the sinking of the Lusitania, the propaganda about the heavy handed German treatment of Belgium, among other things.
Because they were at war with the Allies and they wanted to keep supplies from reaching places like Britain. The Lusitania was carrying some weapons supplies for Britain which is why it was targeted.