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The day penicillin was discovered – level 2
28-09-1928Alexander Fleming was a Scottish microbiologist. He wanted to discover a...
The day penicillin was discovered – level 3
28-09-1928Alexander Fleming was a Scottish microbiologist. He wanted to discover a...
The day Machu Picchu was discovered – level 1
24-07-1911In 1450, the Incas build a town high in the Andes,...
The day Machu Picchu was discovered – level 2
24-07-1911Around 1450, the Incas built a city high in the Andes,...
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...
