 Complete the following phrase:  Historically, Ulster lay at the heart of the Gaelic world made up of Gaelic Ireland, Scotland and the Isle of Man. According to tradition, in ancient Ireland it was one of the fifths  ruled by a rí ruirech, or king of over-kings. It is named after the overkingdom of Ulaid, in the east of the province, which was in turn named after the Ulaid folk. The other overkingdoms in Ulster were Airgíalla and Ailech. After the Norman invasion of Ireland in the 12th century, eastern Ulster was conquered by the Anglo-Normans and became the Earldom of Ulster. By the late 14th century the Earldom had collapsed and the ONeill dynasty had come to dominate most of Ulster, claiming the title King of Ulster. Ulster became the most thoroughly Gaelic and independent of Irelands provinces. Its rulers resisted English encroachment but were defeated in the Nine Years War 15941603. King James I then colonised Ulster with English-speaking Protestant settlers from Great Britain, in the Plantation of Ulster. This led to the founding of many of Ulsters towns. The inflow of Protestant settlers and migrants also led to bouts of sectarian violence with Catholics, notably during the 