They made steel tools and chariots.
In Ancient Greece they had played in Chariots,marathons
The wheel
No they did not. The earliest chariots were made by the Sumerians. The first fully developed chariots were made by the Sintashta-Petrovka Proto-Indo-Iranian culture.
wheels
yes which helped the plow and chariots for battles
democracy
In ancient Greece most horses were used to pull chariots and they were used for food if necessary
Chariots were built in Mesopotamia as early as 3000 BC
yes they did
no
They mostly used chariots if they were royalty. Other wise they had to walk.