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Which developments made communication independent of transport?

APost offices and mail vans
BRailways and steamships
CCanals and river barges
DMobile phones and satellites
Answer & Solution
Correct answer: D. Mobile phones and satellites
1. Mobile phones and satellites carry messages without transport. 2. Post still handles huge mail volumes. 3. Telegraph and telex have almost gone. _Source: syllabus Geography, Fundamentals of Human Geography, Chapter 7, Tertiary and Quaternary Activities._
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