How did Richard III’s defeat lead to the Tudor dynasty?

Richard III’s defeat at the Battle of Bosworth Field on August 22, 1485, marked the end of the house of Plantagenet and the rise of the Tudor dynasty.12

The transition occurred through several critical factors:

• Military Victory: Henry Tudor, the sole surviving male claimant to the house of Lancaster, returned from exile with foreign support to challenge Richard III. During the battle, the desertion of key noblemen—most notably the Stanley family—left Richard isolated, leading to his death on the field.34516
• Legitimacy and Marriage: Because Henry’s own ancestral claim to the throne was weak and technically tainted by illegitimacy, he solidified his position by marrying Elizabeth of York, the daughter of Edward IV, in 1486. This marriage united the warring houses of York and Lancaster, effectively ending the Wars of the Roses.462
• Consolidation: Henry VII secured his rule through parliamentary recognition and by claiming the throne by right of conquest, establishing a stable, long-lasting dynasty that benefited from a period of economic and social growth.46