Chimor (also Kingdom of Chimor or Chimú Empire) was the political grouping of the Chimú culture (Spanish pronunciation: [tʃi'mu]). The culture arose about 900 CE, succeeding the Moche culture, and was later conquered by the Inca emperor Topa Inca Yupanqui around 1470, fifty years before the arrival of the Spanish in the region. Chimor was the largest kingdom in the Late Intermediate Period, encompassing 1,000 kilometres (620 mi) of modern-day Peruvian coastline.
According to Chimú oral history, the history of Chimor began with the arrival of Taycanamo in the Moche Valley from the sea on a balsa raft. From there, his descendants would conquer surrounding areas starting with his son Guacriur. Guacricur integrated Chimú's reign over the lower valley and Ñancempinco, Taycanamo's grandson would expand the kingdom by conquering the upper valley. Ñançenpinco began to further expansion both north and south of the Moche Valleys.