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The day the first satellite was launched – level 2
04-10-1957Sputnik was one of the most famous objects which people made....
The day the first satellite was launched – level 3
04-10-1957It was one of the most famous objects ever created by...
The day Stanislav Petrov saved the world from the apocalypse – level 3
26-09-1983Stanislav Petrov saved the world in 1983. On September 26, 1983,...
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...
