The document outlines important eras and inventions in early human history, starting with the Paleolithic era and Neolithic era, followed by important ceramic and fabric inventions around 7000 years ago, then the wheel, sail, and plow around 6000 years ago marking the Metal Ages.

1. Prehistory

2. Paleolithic Era

3. Neolithic Era 7000 Years Ago Important Inventions: Ceramic Fabric

4. Metal Ages 6000 Years Ago Important Inventions: Wheel Sail Plow