Persian Empire

The Achaemenid Persian Empire (550–330 BCE), founded by Cyrus the Great, was the world's first true superpower — at its peak stretching from Greece and Libya in the west to the Indus Valley in the east, encompassing an estimated 44% of the world's population. Cyrus's cylinder (the 'first human rights declaration') proclaimed tolerance for all religions and peoples under his rule. Cyrus freed the Jews from Babylonian captivity (538 BCE), earning him the only positive mention of a non-Israelite ruler in the Hebrew Bible ('anointed by God'). Persian Royal Road (2,700 km) with postal relays and standardized weights and measures created the ancient world's most efficient administration. The empire fell to Alexander the Great (334–323 BCE) but Persian culture influenced Islam, Greek art, and all subsequent Middle Eastern civilization.