2,800 BC to 2660 BC: 

2,800 BC, Ireland: Copper and gold were both mined and worked at the same time and places on the island.

 

2790 BC, Egypt: Imhotep(he who comes in peace) was a "chancellor" to the Pharaoh Djoser. He was favored by early Egyptian intellectuals.

 

 

 

2745 BC: Egypt: Menes, king of upper Egypt.

2,700 BC: Evidence of plants selected and altered by men for their use; that is anthropogenic plants of cultigens date to this time.

2,600 BC, US: The Mississippi River drainage area contains abundant evidence of elaborate ceremonial complex, ceramics, mound burials, and cultigens attests the Louisiana Dept of Culture personnel.