By Tithi Bhattacharya / Made by History October 31, 2024 7:00 AM EDT A lmost two centuries ago, Irish immigrants brought a festival called Samhain to North America. Samhain had ancient pagan roots. It was celebrated as a harvest festival at the end of October, but also marked a day when the veil between this world and the next was at its thinnest. The Irish brought Samhain to the New World in the late 1840s when a devastating potato famine forced millions of them to leave Ireland. They came to