The Persian Empire is on the coasts of the Persian gulf. The Persians also have the first set of currency so it is easier to purchase goods. Finally Persia has religious freedom.
The Persian empire is the largest empire known to date. It takes up all of the Fertile Crescent and a lot more. It also has two major rivers the Tigris and Euphrates and it is on the coasts of the Red Sea, Mediterranean Sea, the Caspian Sea, the Black Sea, the Arabian Sea, the Aral Sea, and the Persian gulf. The Persian empire also has one of the nicest kings of all time. The king let the prisoners of the empire they conquered go home. This kings name is Cyrus. He did not in force religious persecution on any of his people or prisoners.
The Persians have the first ever currency. Instead of weighing gold the Persians use coins with different price values to pay for goods. This also makes it easier to pay someone who did work for you.
The Persians also conquered a major empire in the Babylonians. They defeated them and took over all there land and advancements. They have a strong and powerful army that can take on anyone.