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The day the bicycle was invented – level 3
12-06-1817The invention of the bicycle was a gradual process that took...
The day the longest railway tunnel was opened – level 1
01-06-2001The longest railway tunnel in the world is in Switzerland. The...
The day the longest railway tunnel was opened – level 2
01-06-2001The longest railway tunnel in the world is in Switzerland. Its...
The day the longest railway tunnel was opened – level 3
01-06-2001The Gotthard Base Tunnel is in Switzerland and it runs under...
The day the Trans-Siberian Railway construction began – level 2
31-05-1891On May 31, 1891, the construction of the Trans-Siberian Railway officially...
The day the Trans-Siberian Railway construction began – level 3
31-05-1891On May 31, 1891, the construction of the Trans-Siberian Railway officially...
The day the first commercial spacecraft carried astronauts to the ISS – level 3
30-05-2020On May 30, 2020, SpaceX launched a spacecraft that carried two...
The day the top of Mount Everest was reached – level 3
29-05-1953Mount Everest is the highest mountain in the world. It rises...
The day Mathias Rust landed in Moscow – level 2
28-05-1987In 1987, Mathias Rust from West Germany was 18 years old....
The day Mathias Rust landed in Moscow – level 3
28-05-1987In the 1980s, the world was still divided into the East...
