The Pagan Revival was a religious movement throughout the XVII, XVIII and early IX Centuries. The Revival was caused by the several Middle Eastern Wars that had caused the upheaval of Middle Eastern society (starting with the War of Trebizond and ending with the Arsacid Armenian Collapse) after which several soldiers and philosophers, maddened by the losses of so many wars, crossed the nation, preaching several ancient religions. This caused mild unrest in the Middle East as demographics shifted, especially in the Empire of Aram, where the Semitic polytheism, several Christian heresies and Zoroastrianism returned with a revenge, and the Sassanid Empire, where Zoroastrianism was actually strengthened and reformed, but Manichaeism, Mazdakism and several other minor sects rising.