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The day the Cultural Revolution started – level 3
18-05-1980Mao Zedong was the chairman of the Communist Party of China...
The day the inventor of Morse Code was born – level 1
27-04-1791Samuel Morse is born on April 27, 1791, in Massachusetts. He...
The day the inventor of Morse Code was born – level 2
27-04-1791Samuel Morse was born on April 27, 1791, in Massachusetts, which...
The day the inventor of Morse Code was born – level 3
27-04-1791Samuel Morse was born on April 27, 1791, in Massachusetts, which...
The day Deepwater Horizon sank – level 3
22-04-2010Deepwater Horizon was a modern oil drilling rig located in the...
The day of the first published photograph of a black hole – level 2
10-04-2019The first black hole ever photographed is located at the center...
The day of the first published photograph of a black hole – level 3
10-04-2019The first black hole that was photographed is located at the...
The day Martin Luther King was killed – level 3
04-04-1968In 1955, slavery hadn’t existed in the United States for 90...
The day of the oil disaster in Alaska – level 3
24-03-1989The Gulf of Alaska was a place with beautiful nature, surrounded...
The day the telephone was patented – level 2
07-03-1876Alexander Graham Bell started his experiments in 1873. He was trying...
