History of Iran

History of Iran and Greater Iran (also referred to as the "Iranian Cultural Continent" by the Encyclopedia Iranica) consists of the area from the Euphrates in the west to the Indus River and Jaxartes in the east and from the Caucasus, Caspian Sea, and Aral Sea in the north to the Persian Gulf and the Gulf of Oman in the south. It includes the modern nations of Iran, Azerbaijan, Afghanistan, Pakistan, Turkmenistan, Tajikistan, Uzbekistan, the eastern parts of Turkey and Iraq. It is one of the world's oldest continuous major civilizations, covering thousands of years, from the ancient civilization on the Iranian plateau, Mannaeans civilization in Azarbaijan, Shahr-i Sokhta (Burned City) near Zabol in Sistan va Baluchestan, and the ancient Jiroft civilization in Kerman (more than 5000 BCE) followed by the kingdom of Elam (more than 3000 BCE) and the Median, Achaemenid, the Parthian, the Sassanian dynasties and following Empires to the modern Islamic Republic of Iran.

Once a major empire of superpower proportions , Persia has been overrun frequently and has had its territory altered throughout the centuries. Invaded and occupied by Arabs, Turks, Mongols, British and Russians, and others -- and often caught up in the affairs of larger powers -- Persia has always reasserted its national identity and has developed as a distinct political and cultural entity.

Iran is home to one of the world's oldest continuous major civilizations, with historical and urban settlements dating back to 4000 BC. The Medes unified Iran as a nation and empire in 625 BC.. Achaemenid Empire (550–330 BC) was the first of the Persian Empires to rule over Middle east, Greece and central Asia. They were succeeded by the Seleucid Empire, Parthians and Sassanids which governed Iran for more than 1000 years.

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