The ancient Persians had a secret. They built an empire with it and became masters of half the world. What is known as the Iranian Plateau had once been occupied by an assortment of different races whose cultures date back at least 3000 years B.C. The Aryans, of which the present Iranians are descendants, migrated to the plateau approximately 1500 B.C. In the 9th century B.C. Median and Parsee tribes entered Iran from the north. The first major Persian government was established in 700B.C. by the Medes in Hagmatana (new Hamadan).For over a century and a half, the Medes ruled supreme over southern Iran and part of Asia Minor. Cyrus the Great disturbed the balance, replacing the Median Empire by the Persian. Welded into a single force by Cyrus, the Persian tribes now became the foremost people in the world. They created what is known as the Achaemenid Empire. In contrast to the other conquerors, the Persians conducted their wars with great humanity. Subject races were treated very mildly, and vanquished enemies with honor. The Achaemenid kings enlisted the participation of their onetime enemies in greater effort of empire-building and guaranteeing peace. Those there was no waste of talent in bloody orgies. The king of king was also the people’s king. At his accession he partook of the simple meal of old peasant days-figs, terebinths and sour milk.