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The day of the Concorde crash – level 3
25-07-2000The development of the supersonic plane Concorde took seven years. The...
The day GPS was fully operational – level 3
17-07-1995The Global Positioning System (GPS) is a satellite system that provides...
The day the Trans-Siberian Railway construction began – level 1
31-05-1891On May 31, 1891, the construction of the Trans-Siberian Railway starts....
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 McDonald’s was founded – level 2
15-05-1940The original McDonald’s restaurant was opened in California on May 15,...
The day McDonald’s was founded – level 3
15-05-1940The original McDonald’s restaurant was opened in California on May 15,...
The day of a successful vaccination – level 3
14-05-1796Smallpox was a deadly and highly infectious disease that had killed...
The day a computer beat the best chess player – level 3
11-05-1997In 1996, IBM built a supercomputer. They approached the world champion,...
