Why did China build the Great Wall of China?

how many Pyramids have been discovered?

What is the most known invention that Mesopotamia?

Who was the ruler of The Indus River?

How many Emperors have china had ?

What Pharaoh Made the Great Pyramid

What is the capitol of Mesopotamia?

What is the most known invention that the Indus river made?

Who was the first emperor of china?

What river is Egypt located on?

What was the Big Building where the king lived

Who took over the Indus River?