You must be an idiot. Those docks, sewage systems/toilets, sophisticated grid system/city planning, irrigation systems, etc, etc, etc. were being thought up by dark skinned people almost 5000 years ago.
You laugh at bricks. You seriously are an idiot. Things like fired bricks are huge innovations. Which people in Europe use extensively.
Check bricks at minoan civilization.
so what stopped dark indians ? how their achievement is lesser than iranians whose are lesser than chinese whose are much lesser than whites.
you are seriously not getting anything as you have not flown to US with those sewer, bricks and yes egyptian pyramids.
Did you ever realize how much indians are backward technologically in front of fair japanese who are in front of whites?
You are consistently avoiding this and it proves that you have no explaination to this.