In modernizing America in the years of 1900-1945, four major things occurred, the world war one, 1920s, Great Depression and the New Deal, and the second world war. World war one began because the Archduke of Austria-Hungary was assassinated in 1914. At the beginning of the war President Wilson decided to stay neutral. Later the Lusitania was sunk by Germany and Germany also sent a letter to Mexico called the Zimmerman telegram. During this era many technologies and techniques for war emerged like machine guns, poisons gas, trench warfare, airplanes and tanks. In America the government was trying to convince the citizens to join the war or to buy war bonds. Since man where at work, many women to the men’s jobs at factories to build support
