9/11 Terrorist Attacks (2001)
Great Chinese Famine (1959-1961)
Great Patriotic War Losses (WWII)
COVID-19 Pandemic in Canada
Vargas Tragedy Landslide (1955)
Sydney Siege (2014)
Coal Mine Explosions and Accidents
Economic Crisis and Unemployment (2001)
Train Derailment Disaster
Industrial Accidents in Oil Fields