Question

why has the stone has been divided into different categories?​

Answer 1

The Stone Age ended when people discovered the art of smelting.

1. The first metal used was copper, followed by bronze.
2. The Stone Age is divided by archaeologists (people who study relics) into three sections
3. Paleolithic ("old stone"), Mesolithic ("middle stone"), and Neolithic ("new stone").

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Answer 2

Answer:

The Stone Age ended when people discovered the art of smelting (making metals). The first metal used was copper, followed by bronze. ... The Stone Age is divided by archaeologists (people who study relics) into three sections: Paleolithic ("old stone"), Mesolithic ("middle stone"), and Neolithic ("new stone