maybe because inventors were kept close to the rulers
According to archeologists, Mesopotamians (Sumerians) did invent the wheel.
Yes, Sumerians did invent the water wheel. In fact the Sumerians invented the wheel.
Yes. Things such as, the calendar, units of measurements and the clock minutes.
No.
Egypt
govno
No. Sumerians did. :)
Yes, they did.
yes
Cuneiform.
ramps and inclined walks,columns,and arches(:
what year did the Sumerians first use the sundial