This image is a graphical timeline chart illustrating the history of major empires and civilizations from 4000 BCE to 2000 AD.
The chart is organized along two axes:
Vertical Axis: Time flows from the bottom of the image to the top. It begins at 4000 BCE and is marked at intervals of 1000 years (3000 BC, 2000 BC, 1000 BC), then at 500-year intervals from the BC/AD line up to 2000 AD.
ALT description in subsequent replies #history #offrehacked
Picture is not mine - just found it on the net