Various surveys can be found ranking the ten worst years for Humanity.   Here is one from The Top Tens. #1    1939:  Nazi Germany invaded Poland, starting World War II. Few remember that Hitler declared war on Poland with the Soviet Union  The Union of Soviet Socialist Republicans first formed in 1922. How this year so high is a mystery to me. #2    1350:  The Black Death ravaged Europe, killing perhaps 50% the population.  99% of the world was in extreme poverty. #3    1941:  Japan attacked Pearl Harbor and Nazi Germany invaded ally Soviet Union.  Genocide of Jews and peak of World War II. #4    1914:  Beginning of World War 1.   #5    2016:  Terrorist attacks in Europe and the United Kingdom voted to leave the European Union. #6  2020:  Australia was on fired, Donald Trump was elected president of the USA and the Coronavirus Pandemic struck. #7  2001:  Terr...