Theodore Roosevelt was born in 1919.
Theodore Roosevelt . Following McKinley 's assassination in September 1901 , Roosevelt became president at age 42 , and remains the youngest president . World War I ( WWI or WW1 ) , also known as the First World War , the Great War , or the War to End All Wars , was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918 .