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Gavrilo Princip, a Bosnian Serb nationalist, assassinated Archduke Ferdinand of Austria and his wife in Sarajevo. The event made everybody start fighting and led to the start of WWI. This date is significant to the U.S. because it led to WWI and WWI turned the U.S. into a global superpower. -
Germany declared war on Belgium, prompting Britan to declare war on Germany. The rise of conflict made a big step in the spreading of WWI. This event started a chain of events that eventually led to the United States joining the war in 1917. -
A German U-20, torpedoed the British ocean liner RMS Lusitania off the Southern coast of Ireland, resulting in the deaths of 1,198 people, including 128 Americans. The attack was another contribution to the U.S. entering the war 2 years later. -
Woodrow Wilson was re-elected as President of the United States. This was significant because it allowed him to continue leading the country through a very important time in history, especially as World War I was growing. His re-election also influenced the U.S. soon involvement in the war. -
A big explosion happened at a factory in Silvertown, England, because of a fire. The explosion was really powerful and caused the deaths of 73 people. This event was important because it showed how dangerous making weapons for war could be, which was something the United States also had to deal with during World War I. -
The United States officially entered World War I by declaring war on Germany. This decision came after a series of events, including the sinking of American ships by German submarines which pushed the U.S. to join the Allies. The entry of the U.S. into the war provided a large boost to the Allied forces and helped them win the war. -
The British detonated mines beneath the German-held Messines Ridge in Belgium during World War I. This massive explosion created huge craters and resulted in significant casualties, marking a major victory for the Allies. -
The U.S. Congress passed the Sedition Act of 1918. This act made it a crime to criticize the government, the Constitution, the flag, or the military during wartime. The act restricted freedom of speech in the United States during World War I, reflecting the government's effort to maintain support for the war effort. -
World War I officially ended with the signing of the Armistice between the Allies and Germany. This agreement, signed at the 11th hour of the 11th day of the 11th month, marked the stop of the fighting. It is significant to the U.S. because it marks the end of World War I and the beginning of Armistice Day, now known as Veterans Day, to honor military veterans. -
The Treaty of Versailles was signed, officially ending World War I. This treaty had heavy penalties on Germany, including territorial losses, military restrictions, and reparations. The End of WWI secures the United States as a global superpower and also it influenced the creation of the United Nations.
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