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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 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 the US stopped fighting in Vietnam – level 1

27-01-1973

Vietnam has two parts of the country in 1964. These two...



The day the US stopped fighting in Vietnam – level 2

27-01-1973

Vietnam was divided into North Vietnam and South Vietnam since the...



The day the US stopped fighting in Vietnam – level 3

27-01-1973

Vietnam was divided into North Vietnam and South Vietnam since the...



The day the first gorilla was born in a zoo – level 2

22-12-1956

The first gorilla was born in a zoo in the United...