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In which decade with the first transatlantic radio broadcast occur?

A: 1850s

B: 1860s

C: 1870s

D: 1900s

Explanation: On December 12, 1901, a radio transmission received by Guglielmo Marconi resulted in the first transmission of a transatlantic wireless signal (Morse Code) from Poldhu, Cornwall, to St. John's, Newfoundland.