Jan. 18 (UPI) -- On this date in history: In 1871, William of Prussia was declared the first German emperor. His reign ended upon his death March 9, 1888, and he was succeeded by his son, Frederick III. In 1919, world leaders gathered in Paris to begin a peace conference after the end of World War I. President Woodrow Wilson used the negotiations to push his idea of an international peacekeeping organization, the League of Nations. In 1935, an additional 98 individuals were sentenced , 19 to