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For what does the world owe Almon Strowger a debt of gratitude?

A.	Parking Meters	B.	Vending Machines
C.	Automatic Telephone Exchanges	D.	Traffic Lights

Answer and Explanation

Answer:Automatic Telephone Exchanges

Explanation:
He was an undertaker, and legend has it, he developed the automatic switch in 1889, to stop competitors from getting his work!

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