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The day a computer beat the best chess player – level 3

11-05-1997

In 1996, IBM built a supercomputer. They approached the world champion,...



The day Nelson Mandela became president – level 1

10-05-1994

Nelson Mandela is born in South Africa in 1918. White people...



The day Nelson Mandela became president – level 2

10-05-1994

Nelson Mandela was born in times when the white people lived...



The day Nelson Mandela became president – level 3

10-05-1994

Nelson Mandela was born in times when the whites lived in...



The day the American Civil War ended – level 2

09-04-1865

In the middle of the 19th century, the situation in the...



The day the American Civil War ended – level 3

09-04-1865

In the middle of the 19th century, the situation on the...



The day of the Tenerife airport disaster – level 2

27-03-1977

It is March 27, 1977. A big plane is ready to...



The day of the Tenerife airport disaster – level 3

27-03-1977

On March 27, 1977, a big plane is ready to take...



The day the trial of the Rosenbergs started – level 1

06-03-1951

In 1945, the United States use an atomic bomb. The atomic...



The day the trial of the Rosenbergs started – level 2

06-03-1951

The atomic bomb which the Americans developed helped to end the...