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The day the first undersea cable was laid across the Atlantic – level 1
05-08-1858On August 5, 1858, people connect North America and Europe with...
The day the first undersea cable was laid across the Atlantic – level 2
05-08-1858The first undersea telegraph cable was put across the Atlantic on...
The day the first undersea cable was laid across the Atlantic – level 3
05-08-1858The first undersea telegraph cable was laid across the Atlantic on...
The day Nautilus traveled under the North Pole – level 1
03-08-1958Nautilus is a US submarine. Its name is the same as...
The day Nautilus traveled under the North Pole – level 2
03-08-1958Nautilus was the world’s first nuclear-powered submarine. On August 3, 1958,...
The day Nautilus traveled under the North Pole – level 3
03-08-1958On August 3, 1958, the United States Navy submarine Nautilus became...
