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The correct answer is telephone.
Telephone arose from an attempt to help hearing-impaired people.
Telephone is termed as a telecommunication which allows either two or more users to have a conversation while they are apart and to be heard directly.
Telephone converts human voice or sound to electronic signals which are being transmitted through cables.
Some of the elements which are essential in telephone are earphone which are termed as receiver and microphone which is the transmitter.
Most of the telephone they have a ringer which produces a sound to show that there is an incoming call.
Hippocrates, an ancient greek philosopher, is often referred to as the Father of Medicine"
Hippocrates theory :
Hippocrates, a Greek physician (c. 460 bce–c. 370 bce), and his contemporaries promoted a medical philosophy known as "the hypothesis of the four humors." Health reigned when the patient's humors—black bile, yellow bile, phlegm, and blood—were in balance; when they were, in some way, out of balance, disease overcame the patient.
What was the first medicine?
German scientist Friedrich Sertürner created the first pharmacological medicine in 1804. In his laboratory, he isolated the primary component from opium and gave it the name "morphine," after the Greek deity of sleep.
To learn more about Hippocrates refer : brainly.com/question/1564392
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Yes its true because of politics its all about the money
