The president to say "a chicken in every pot and a car in every garage" was Herbert Hoover. Which I think is ironic since he is widely known for the infamous "hoovervilles" which were made by impoverished people during the Great Depression.
In August 1915, a German submarine sunk the British ocean liner S.S. ... President Wilson warned Germany that if it was determined they'd sunk the ship without cause, the United States may cut diplomatic ties and enter the war