1900's to 1920's Timeline (by Paxton Crews) By paxtoncrews Period: 1904 to 1912 The building of the Panama Canal 1912 Election of Woodrow Wilson In 1912 Woodrow Wilson was elected as president of the United States. 1914 The beginning of WWI 1915 The Sinking of Lusitania 1917 The United States enters WWI 1918 The end of WWI 1919 The Red Scare The Red Scare was the promotion of widespread fear of a potential rise of communism or anarchism in the United States.