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The day the order to kill the Polish elite was signed – level 1

05-03-1940

It is September 1, 1939. Germany attacks Poland. Two weeks later,...



The day the order to kill the Polish elite was signed – level 2

05-03-1940

In August 1939, the Soviet Union and Germany signed a non-aggression...



The day the order to kill the Polish elite was signed – level 3

05-03-1940

In August 1939, the Soviet Union and Germany signed a non-aggression...



The day a signal came from space – level 1

15-08-1977

It is August 15, 1977. An American astronomer looks at the...



The day a signal came from space – level 2

15-08-1977

On August 15, 1977, American astronomer Jerry Ehman looked at the...



The day a signal came from space – level 3

15-08-1977

On August 15, 1977, American astronomer Jerry Ehman carried out an...



The day the Tour de France began – level 3

01-07-1903

The first Tour de France began on July 1, 1903, in...



The day the longest bridge was opened – level 2

30-06-2011

The Danyang-Kunshan Grand Bridge is in China. The bridge was officially...



The day the longest bridge was opened – level 3

30-06-2011

The Danyang-Kunshan Grand Bridge, located in China, was officially opened to...



The day of the Battle of Waterloo – level 2

18-06-1815

In 1804, Napoleon Bonaparte became the emperor in France. He was...