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Franz Ferdinand and his wife visit Sarajevo, ending in them both being assassinated by a single Serbian assassin. This created Austria's rivalry with Serbia. This is significant to America because European countries and starting to go against each other, soon involving them. -
Great Britain declares war on Germany, and the declaration of war binds on many other countries within the British Empire. This is significant to the U.S. because the war keeps getting closer and closer to America. -
A German U-Boat attacks the British liner Lusitania using torpedoes. This killed many people including 128 Americans. This is significant to the U.S. because the U.S. was starting to get involved with their people dying. -
Woodrow Wilson was re-elected as the president. He had a slogan saying, "He kept us out of war." This is significant to the U.S. because Americans were hopeful and confident they wouldn't be in totally in the war. -
A telegram is sent saying that Germany and Mexico are making an alliance against the U.S. This is significant to the U.S. because the telegram was made public, panicking Americans and causing conflict whether they wanted to be involved in the war or not. -
America declares war on Germany. This is significant to America because they are getting involved in a new war that will create history. -
The first American troops land in France. This is significant because the Americans are starting to make their moves on Germany. -
Made to extend the Espionage Act. The Sedition Act covered a broad range of offenses. This is significant to the U.S. because it prevented the government and war from being looked at badly. -
Germans sign the Armistice. The fighting continues all along the Western Front. War is still happening, and there are many casualties. This is significant to the U.S. because many soldiers were dying and even arguing over who fired the last shot ending WW1. -
German delegation signs a treaty officially ending the war. The treaty was 230 pages long and had little in common with Wilson's Fourteen Points, which the Germans wanted. This is significant to the U.S. because this ended the first world war, making a huge impact in history, and leading to WW2.