The Jewish Mob's roots began in the late nineteenth century when Monk Eastman founded the Eastman Gang, which fought the Five Points Gang of Italian mobster Paul Kelly. With political changes in Europe, many Jews (primarily from Russia, Germany, and Poland) immigrated to the USA. Among the immigrants were Meyer Lansky, Abraham Rothstein, and Joseph Rosenzweig. They either would become/gave birth to famous Jewish mobsters. Famous mobsters include Bugsy Siegel, Arnold Rothstein, Meyer Lansky, Joe the Greaser, Hyman Roth, and Moe Greene. Most were killed (Siegel, Rothstein, Roth, and Greene) in wars with the Italians, Irish, or other Yiddish gangs. But they would build several casinos, creating Las Vegas as we know it.