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The day Machu Picchu was discovered – level 3
24-07-1911Around 1450, the Incas built a city high in the Peruvian...
The day the construction of Hoover Dam began – level 1
07-07-1930On July 7, 1930, the construction of the Hoover Dam starts....
The day the construction of Hoover Dam began – level 2
07-07-1930On July 7, 1930, the construction of the Hoover Dam began....
The day the construction of Hoover Dam began – level 3
07-07-1930On July 7, 1930, the construction of the Hoover Dam began....
The day HIV was discovered – level 1
23-04-1984In 1981, five men from Los Angeles have a strange disease....
The day HIV was discovered – level 2
23-04-1984In 1981, doctors found that five men from Los Angeles had...
The day HIV was discovered – level 3
23-04-1984In 1981, five men from Los Angeles were reported to have...
The day the US stopped fighting in Vietnam – level 1
27-01-1973Vietnam has two parts of the country in 1964. These two...
The day the US stopped fighting in Vietnam – level 2
27-01-1973Vietnam was divided into North Vietnam and South Vietnam since the...
The day Oswiecim concentration camp was liberated – level 2
27-01-1945Discrimination against Jews began after Hitler came to power in 1933....
