History of England
With Henry VII's accession to the throne in 1485, the Wars of the Roses came to an end, and Tudors would continue to rule England for 118 years. Traditionally, the Battle of Bosworth Field is considered to mark the end of the Middle Ages in England, although Henry did not introduce any new concept of monarchy, and for most of his reign his hold on power was tenuous. He claimed the throne by conquest and God's judgement in battle. Parliament quickly recognized him as king, but the Yorkists were far from defeated. Nonetheless, he married Edward IV's eldest daughter Elizabeth in January 1486, thereby uniting the houses of York and Lancaster.
House of Plantagenet
The rivalry between the House of Plantagenet's two cadet branches of York and Lancaster brought about the Wars of the Roses, a decades-long fight for the English succession, culminating in the Battle of Bosworth Field in 1485, when the reign of the Plantagenets and the English Middle Ages both met their end with the death of King Richard III. Henry VII, of Lancastrian descent, became king of England; five months later, he married Elizabeth of York, thus ending the Wars of the Roses, and giving rise to the Tudor dynasty. The Tudors worked to centralise English royal power, which allowed them to avoid some of the problems that had plagued the last Plantagenet rulers. The resulting stability allowed for the English Renaissance, and the advent of early modern Britain.