Welsh nationalism (Welsh: Cenedlaetholdeb Cymreig) emphasises the distinctiveness of Welsh language, culture, and history, and calls for more self-determination for Wales, which might include more devolved powers for the Welsh Assembly or full independence from the United Kingdom.
Through most of its history before the Anglo-Norman Conquest, Wales was divided into several kingdoms. From time to time, rulers such as Hywel Dda, Gruffudd ap Llywelyn and Rhodri the Great managed to unify many of the kingdoms, but their lands were divided on their deaths. Incursions from the English and Normans also amplified divisions between the kingdoms. In the 12th century, Norman king Henry II of England exploited differences between the three most powerful Welsh kingdoms, Gwynedd, Powys, and Deheubarth, allowing him to make great gains in Wales. He defeated and then allied with Madog ap Maredudd of Powys in 1157, and used this alliance to overwhelm Owain Gwynedd. He then turned on Rhys ap Gruffydd of Deheubarth, who finally submitted to him in 1171, effectively subjugating much of Wales to Henry's Angevin Empire. By 1282, only Gwynedd stood out, whose ruler was accorded the title Prince of Wales. Following the defeat of Llywelyn ap Gruffudd by Edward I Wales lost its last independent kingdom and became subject to the English crown, either directly or indirectly. It retained some vestiges of distinction from its neighbour however, retaining the Welsh language, law, and culture.