As mentioned by Mr. Whyte, he married Elizabeth of York, ending the rivalry between the two main houses of the Plantagenet dynasty. read more
Though this was not achieved during his reign, the marriage eventually led to the union of the English and Scottish crowns under Margaret's great-grandson, James VI and I following the death of Henry's granddaughter Elizabeth I. read more
Henry VIII was responsible for creating the modern English nation. During his reign, he centralized control over his realm when he separated from the Roman Catholic Church after a dispute with Pope Clement VII, when the pope refused to annul his marriage to Catherine of Aragon. read more