What was the name of the first colony that established full religious freedom?

The first colony to establish full religious freedom was Rhode Island. It was founded in the early 17th century by Roger Williams, who was an advocate for the separation of church and state. Williams, having faced persecution in Massachusetts for his beliefs, sought to create a community where individuals could freely practice their faith without interference from government or religious authorities. This idea of religious tolerance was groundbreaking at the time, as most other colonies had established state churches or limited religious practices.

Rhode Island's commitment to religious liberty attracted a diverse population, including various Protestant groups, Jews, and others seeking refuge from religious persecution. This foundational principle of religious freedom has made Rhode Island a significant historical landmark in the development of religious liberty in America.