Question

4. Before the discovery of metal early humans listed tools made
of animals​

Answer 1

Explanation:

2.6 million years ago

Early Stone Age Tools

The earliest stone toolmaking developed by at least 2.6 million years ago. The Early Stone Age began with the most basic stone implements made by early humans. These Oldowan toolkits include hammerstones, stone cores, and sharp stone flakes

Answer 2

2.8 million years ago they used this