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The day the first nonstop flight around the world started – level 2
26-02-1949On February 26, 1949, a special plane took off from a...
The day the first nonstop flight around the world started – level 3
26-02-1949On February 26, 1949, a special plane with a 14-member crew...
The day YouTube started – level 2
14-02-2005On February 14, 2005, the domain youtube.com was registered by three...
The day YouTube started – level 3
14-02-2005On February 14, 2005, the domain youtube.com was registered by three...
