Describe the history of the us being known as a country that promotes the free exercise of religion

United States have always been a country where people went to avoid religious prosecution. This was the case for example even with the first pilgrims who went to the colonies. When there was religious prosecution in the US itself, the British Crown formed new colonies for those who were of different religious beliefs. After the US were formed, the first amendment guaranteed a right to religion and prevented the government from ever establishing its own religion or supporting any.