January 10-15 radical coup in Germany is suppressed
January 15 molasses explosion (a 50-ft.-tall tank holding 2.3 M gallons) kills 21, injures 150
in Boston. You might wonder how molasses can kill someone. Fortunately, a team from Harvard recently studied this: apparently the molasses had been heated to make it less viscous and easier to move, and it remained warm. When the tank exploded, the molasses rushed through the streets at 35mph, then quickly cooled, drowning people who had not been swept under by the first wave. Kind of the worst of both worlds. Detailed picture of the explosion.
February Allies secretly agree to
intervene in USSR to overthrow nascent Soviet Union (some of your League of Nations debates mention this)
Seattle general strike
April more than 35 dynamite-filled bombs are mailed to politicians, newspapermen, and big-business figures but are intercepted before reaching them
June 2 8 more anarchist bombings, this time successful, killing one. The house of Attorney General A. Mitchell Palmer is destroyed. FDR, then Assistant Secretary of the Navy, lived across the street and had walked by the house just before the explosion. (Their most successful attack
hits Wall Street Sep. 16, 1920, killing 39.)
June 4 19th Amendment is sent to states, eventually giving women the vote (officially ratified Aug. 1920)
June 28 German delegates and Allies sign
Treaty of Versailles
July 27 Chicago race riots
August-Sept 25 Wilson's whistle-stop tour of US to convince the American people that the Senate should ratify the Treaty and have the US join the League; Wilson collapses, ending the tour
September 9-13 Boston police strike
September 21 nationwide steel strike begins (final unions give up, 1920).
The image below is in English, Russian, Italian, Polish, Albanian, Croatian, Czech (fun fact: Czech sci-fi writer Karel Capek used his native word for labor, "robota," to coin the word "robot" in a 1920 play called Rossum's Universal Robots), and Hungarian.
October Chicago "Black Sox" throw World Series
October 28 Volstead Act is ratified over Wilson's veto, beginning Prohibition
November 19 Senate rejects Treaty of Versailles and League of Nations (info on the debate at bottom of this timeline)