The trigger of the English Reformation was the desire of King Henry VIII to obtain the nullity of his marriage. What began as a political, not theological, dispute had profound political as well as theological consequences. After the separation of Rome, by the Act of Real Supremacy, the monarch became supreme head of the Church of England, that became a independent national Church of Rome.
1774-1776 why because the intolerable acts was coming into effect due to the boston tea party if that makes any sense if not let me know ill explain more