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The day the order to kill the Polish elite was signed – level 1
05-03-1940It is September 1, 1939. Germany attacks Poland. Two weeks later,...
The day the order to kill the Polish elite was signed – level 2
05-03-1940In August 1939, the Soviet Union and Germany signed a non-aggression...
The day the order to kill the Polish elite was signed – level 3
05-03-1940In August 1939, the Soviet Union and Germany signed a non-aggression...
The day the world saw the first cloned sheep – level 1
22-02-1997Dolly is a sheep. She is born on July 5, 1996....
The day the world saw the first cloned sheep – level 2
22-02-1997Dolly was a sheep born on July 5, 1996. She looked...
The day the world saw the first cloned sheep – level 3
22-02-1997Dolly was a sheep born on July 5, 1996. At first...
The day the Nobel Prizes are awarded – level 1
10-12-1901The Nobel Prize is a very special prize. It is a...
The day the Nobel Prizes are awarded – level 2
10-12-1901The Nobel Prize is a very special prize for a scientist,...
The day the Nobel Prizes are awarded – level 3
10-12-1901The Nobel Prize is the most prestigious prize a scientist, writer,...
