The map shows the Persian Empire. Map of the Persian Empire. Persia is shaded in dark pink and the Persian Empire is shaded light pink. The Tigris and Euphrates Rivers run through the middle of the empire.

What is the best conclusion based on the map?

The Persian Empire was the largest in the world.
Persia would have to attack Athens and Sparta by land.
Persia was a tiny country compared to the size of its empire.
Athens and Sparta were Persia’s next target in growing its empire.