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The telegraph was invented by:
ASamuel Morse
BAlexander Graham Bell
CGuglielmo Marconi
DThomas Edison
Answer & Solution
Correct answer: A. Samuel Morse
1. Bell invented the telephone (1876).
2. Marconi developed wireless telegraphy (1890s).
3. Samuel Morse developed the electric telegraph (1837).
_Source: UGC NET Paper 1 Study Book (ugc-net.com class notes) — Communication History_