Analysis of information sources in references of the Wikipedia article "Dan zahvalnosti" in Croatian language version.
Their leader, Governor William Bradford, issued a formal proclamation commanding the people to give thanks to God for having received divine protection during a terrible winter and for having received their first harvest. It was also new that the Pilgrims celebrated their thanksgiving by eating wild turkey (an indigenous bird) and venison.
The Pilgrims arrived in Leiden in 1609, after fleeing religious persecution in England. Leiden welcomed them because it needed immigrants to help rebuild its textile industry, which had been devastated by a long revolt against Spain. Here, the Pilgrims were allowed to worship as they wanted, and they even published their arguments calling for the separation of church and state. Jeremy Bangs of the Leiden American Pilgrim Museum says the Pilgrims quickly adopted Dutch customs like civil marriage and Thanksgiving.
