Iran , also known as Persia officially the Islamic Republic of Iran is a country in Western Asia. With over 81 million inhabitants, Iran is the world’s 18th-most-populous country. Comprising a land area of 1,648,195 km2 (636,372 sq mi), it is the second-largest country in the Middle East and the 17th-largest in the world. Iran is home to one of the world’s oldest civilizations, beginning with the formation of the Elamite kingdoms in the fourth millennium BCE. It was first unified by the Iranian Medes in the seventh century BCE, reaching its greatest territorial size in the sixth century BCE, when Cyrus the Great founded the Achaemenid Empire, which stretched from Eastern Europe to the Indus Valley, becoming one of the largest empires in history.
Reference WIKIPEDIA/Iran