Persian (Sassanid/Sasanian) Empire Tribute Flag, Ērānshahr, Empire Of The Iranians

The Sasanian Empire (/səˈsɑːniən, səˈseɪniən/), officially known as the Empire of Iranians (Middle Persian: 𐭠𐭩𐭥𐭠𐭭𐭱𐭲𐭥𐭩 Ērānshahr), also called the Neo-Persian Empire by historians, was the last kingdom of the Persian Empire before the spread of Islam. Named after the House of Sasan, it ruled from 224 to 651 AD. The Sasanian Empire succeeded the Parthian Empire and was recognised as one of the leading world powers alongside its neighbouring arch-rival, the Roman-Byzantine Empire for a period of more than 400 years. The Sasanian Empire was founded by Ardashir I, after the fall of the Parthian Empire and the defeat of its last emperor, Artabanus IV. At its greatest extent, the Sasanian Empire encompassed all of today’s Iran, Iraq, Eastern Arabia (Bahrain, Kuwait, Oman, Qatif, Qatar, UAE), the Levant (Syria, Palestine, Lebanon, Israel,