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First you have to dig into the earth to find the right kinds of stone which have the right kinds of metal ores in them. (Ore = stone containing metal compounds.)

Then you have to smelt and refine the ores to get the pure Iron, Copper, Silver, Gold, or Aluminium metals which are good conductors of electricity.

Then you have to roll and draw the refined metal into different size electrical wires and, finally, coat the wires with plastic insulation.

To be able to do all that you would have to dig a mine in the ground and build a Hugh factory. Also you would have to employ a lot of skilled people. To do all that costs many millions of dollars.

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