Respuesta :

In approximately the fourth millennium BCE in Sumer, India, and China, it was discovered that combining copper and tin creates a superior metal, an alloy called bronze. This discovery represented the beginning of the Bronze Age, enabling people to create metal objects that were harder than previously possible.

Answer:

discovered that combining copper and tin creates a superior metal, an alloy called bronze

Explanation:

which led to the introduction of the bronze age :D

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