WORLD CIVILIZATION

Detailed explanation-1: -Whether motivated by Greek pride or the spoils of imperial conquest, Alexander picked up where his father left off and marched into Persia in 334 BC, where his army of 50, 000 would be tested against the largest and best-trained fighting force in the known world.

Detailed explanation-2: -The Persian Empire-The Persian Empire was one of the largest empires in the ancient world. It covered parts of three continents: Europe, Africa, and Asia. The Persian Wars-The Persian Wars were fought between the Persian Empire and the Greek city-states.