The document that ended the War of the Roses was the Treaty of Picquigny, signed in 1475, but a more significant resolution was the establishment of the Tudor dynasty after the rise of Henry Tudor (Henry VII). The War of the Roses was a series of civil wars fought between the houses of Lancaster and York for control of the English throne. The conflict concluded with the Battle of Bosworth Field in 1485, where Richard III was defeated, leading to Henry VII's ascension. This ended decades of dynastic struggle and initiated a new era of relative stability under the Tudor monarchy in England.