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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 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 Empire State Building opened – level 1
01-05-1931It is 1930. People start to build the Empire State Building....
The day the Empire State Building opened – level 2
01-05-1931The construction of the Empire State Building began in 1930. It...
The day the Empire State Building opened – level 3
01-05-1931The construction of the Empire State Building began in 1930. It...
The day the first commercial spacecraft carried astronauts to the ISS – level 1
30-05-2020SpaceX is a private company. The company builds spacecraft. On May...
The day the first commercial spacecraft carried astronauts to the ISS – level 2
30-05-2020On May 30, 2020, SpaceX launched a spacecraft which carried two...
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...
