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1 ene 200 año aC - W: First known use of smelted iron to create steel.

Descripción:

World: India was the first known to smelt iron with carbon to create steel, used to make swords, knives, and sewing needles.

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History of Mathematics 2019

16 jul 2019

2

0

1442

fecha:

1 ene 200 año aC

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~ 2227 years ago

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