Middle Eastern countries learned about how the Jewish people in Italy dressed up for Purim and decided to adopt this custom as well.
Italian Jews originate the tradition of dawning elaborate costumes and wearing masks, possibly influenced by the Roman carnival.
An emergence of "Special Purims" — which were days introduced by local Jewish communities recruiting a number of Purim customs — shows just how effective the holiday is for engaging larger Jewish concerns.
According to the Book of Esther, Purim was celebrated for the first time the day after the Jewish people of the Persian Empire were granted permission to rise up against their enemies.