how Internet back in the copper wire days could still transmit data in seconds when Electrons flow through copper at a few metres per second.

Question

how Internet back in the copper wire days could still transmit data in seconds when Electrons flow through copper at a few metres per second.

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Answer 1

Pulses of electricity convey signals along a wire. But electricity is not electrons travelling down the wire. Very roughly, electricity is the impulse of energy that electrons convey by bumping into their neighbors.

In this way, electricity is like sound. You can hear an explosion from a mile a way about 5 seconds after detonation. The air itself didn’t travel one mile; the impulse that air molecules convey to each other travelled one mile.