1. Poland
Poland endured immense suffering during the 20th century, beginning with its invasion by Nazi Germany and the Soviet Union in 1939. The subsequent occupation led to the deaths of approximately six million Polish citizens, nearly 21.4% of the pre-war population, with half being Polish Jews. The Holocaust resulted in the systematic extermination of about three million Polish Jews (en.wikipedia.org). After World War II, Poland fell under harsh Communist rule, leading to further political repression and economic hardships. The loss of sovereignty and the immense human toll during this period have left a lasting impact on the nation.
