Today in Military History: May 7, 1915; Sinking of the Lusitania

Photograph of R.M.S. Lusitania coming into port, possibly in New York. (Library of Congress)

The British ocean liner, the Lusitania, is sunk by a German submarine, killing 1,195, 128 of which are Americans.  The sinking of the Lusitania expedites the U.S. entry into World War I.