How was the phone made

After two years, he created a magnetic telephone which was the precursor to modern phones. This design consisted of a transmitter, receiver, and a magnet. The transmitter and receiver each contained a diaphragm, which is a metal disk. ... The first phones made available to consumers used a single microphone.

Explanation:

Plz give me brainlist I worked hard

After two years, he created a magnetic telephone which was the precursor to modern phones. This design consisted of a transmitter, receiver, and a magnet. The transmitter and receiver each contained a diaphragm, which is a metal disk. ... The first phones made available to consumers used a single microphone.

Explanation:

I used go0gle so the info should be correct hope this helped:

d) eastern business owners and former federalists