Both North Carolina and Virginia considered the trans-Appalachian settlements illegal, and refused to annex them. Nevertheless, at the onset of the American War for Independence in 1776, the settlers, who vigorously supported the Patriot cause, organized themselves into the "Washington District" and formed a committee of safety to govern it. In July 1776, Dragging Canoe and the faction of the Cherokee opposed to the Transylvania Purchase (later called the Chickamaugas) aligned with the British and launched an invasion of the Watauga settlements, targeting Fort Watauga at modern Elizabethton and Eaton's Station near modern Kingsport. After the settlers thwarted the attacks, North Carolina agreed to annex the settlements as the Washington District.