Who really helped the poor?
(media.greatawakening.win)
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He wanted to give the world free energy but was thwarted by the deep state. He did invent alternating current which improved electricity, I think in the delivery.
Correct! Edison favoured Direct Current (DC) while Tesla preferred Alternating Current (AC). The problem with Edison's system was that you needed another power station every few blocks because the voltage dropped over long distances.
Basically, volt drop depends on the amount of current and the length (resistance) of the cable.
Using AC meant that transformers could be used and they work a bit like gearboxes. You can reduce the torque by increasing the speed and vice versa. With a transformer you can greatly increase the voltage and so reduce the current when transmitting energy. Lower current so lower losses.
DC cannot be stepped up and down so easily.
I seem to recall that Edison said that electric chairs should be powered by AC in an attempt to make AC sound more dangerous than DC!
To piggyback on this excellent post for anyone interested, AC and DC both have their strengths and weaknesses, so it's a right tool for the job situation.
Simplified, DC is better for small applications, AC is better over distance. Your computer is all DC on the inside. The power line to your house and most of the wiring in it is AC. That's why your electronics need an AC adapter, the big body plug, instead of just a regular plug. It converts AC to DC.