1940 January First resistance actions by Jewish youth in Poland. 165,000 people in 1.6 square miles. May 20 Concentration camps established at Auschwitz. December Emmanuel Ringelbaum begins work on secret archives of Jewish life in Warsaw ghetto. 1941 July 31 Heydrich appointed by Goering to implement the Final Solution.
Jewish partisans begin operating in Minsk area.
January 15 Nazis begin transporting Jews from Lodz to Chelmno death camp. Heydrich outlines plan to murder Europe's Jews. April Transports from ghettos to death camps extend over Poland. June 1 Treblinka death camp opens. March Liquidation of Cracow Ghetto.