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The day GPS was fully operational – level 3

17-07-1995

The Global Positioning System (GPS) is a satellite system that provides...



The day the Trans-Siberian Railway construction began – level 1

31-05-1891

On May 31, 1891, the construction of the Trans-Siberian Railway starts....



The day the Trans-Siberian Railway construction began – level 2

31-05-1891

On May 31, 1891, the construction of the Trans-Siberian Railway officially...



The day the Trans-Siberian Railway construction began – level 3

31-05-1891

On May 31, 1891, the construction of the Trans-Siberian Railway officially...



The day McDonald’s was founded – level 2

15-05-1940

The original McDonald’s restaurant was opened in California on May 15,...



The day McDonald’s was founded – level 3

15-05-1940

The original McDonald’s restaurant was opened in California on May 15,...



The day of a successful vaccination – level 3

14-05-1796

Smallpox was a deadly and highly infectious disease that had killed...



The day a computer beat the best chess player – level 3

11-05-1997

In 1996, IBM built a supercomputer. They approached the world champion,...



The day the inventor of Morse Code was born – level 2

27-04-1791

Samuel Morse was born on April 27, 1791, in Massachusetts, which...



The day the inventor of Morse Code was born – level 3

27-04-1791

Samuel Morse was born on April 27, 1791, in Massachusetts, which...