so soon?

The Sasanian Empire (/səˈsɑːniən, səˈseɪniən/), officially Ērānšahr (Middle Persian: 𐭠𐭩𐭥𐭠𐭭𐭱𐭲𐭥𐭩, lit. 'Empire of the Iranians'),[7][8][a] was the last empire of ancient Iran. Named after the House of Sasan, it endured for over four centuries, from 224 to 651, making it the second longest-lived imperial Iranian dynasty after the directly preceding Arsacid dynasty of Parthia (Parthians).[10][11]