Question

The chariot helped this group to become one of the most powerful empires in the world. They didn't just adapt the chariot from other groups, they perfected it. Their design made it light enough to be carried by two men, and the axle was moved to the rear to increase speed and stability.

Answer 1

Egypt. They perfected the chariot after learning how it was made from other civilizations, particularly Mesopotamia.

Answer 2

The nation you're taking about would be the Egyptians. The Egyptians were an ancient empire that effectively used a chariot as a means of war. They usually equipped soldiers who were on chariots with either spears and or arrows and javelins. This made chariots very deadly.