Why did Persia rise into a great empire?

Answer 1

Persia took over its overlord Media under Cyrus the Great, and their combined power was able to seize the Babylonian Empire. Cyrus' ambition led him to further conquests of Asia Minor and Palestine in the west, and Central Asia in the west. His successor. His son Cambyses took Egypt and Libya, then his successor Darius consolidated the with further additions. When people start conquering, it is difficult for them to stop until either they are defeated or they reach the natural geographic limits and resources to take more.

Answer 2

The kingdoms in western Asia were almost in continuous wars with one another for long periods of time. Heads of state decided to create professional and permanent armies that were small in comparison to their civilian populations. In Persia, these professionals became extremely proficient in developing battle tactics and making the most use of their weapons of war. These full time professionals were experts at their craft. Citizen style armies fell victim to the Persians as they expanded their empire as faraway as India and as close to the Mediterranean Sea as in Egypt and Asia Minor.

Answer 3

In combination with the Medes and the Babylonians who they had conquered, the Persian had the most powerful force in western Asia, and used this to conquer Egypt and Central Asia.