"Moche is the name given to the site, river valley, culture, style, and state that dominated the North Coast for the first 600 years AD. Arguably the first true state in the Andes, at its height it covered from the Piura Valley in the far north to the Huarmey Valley in the south. Two related languages were spoken, Muchic from Lambayeque northward and Quingan from there southward, helping to delineate two major spheres within this culture. The southern sphere had the site of Moche as its capital and mounted and expansive conquest campaign around the fourth century, probably to gain precious farmland. Sudden appearances of characteristic monumental adobe mounds and defensive structures attest to this imposition over local peoples. Images of warfare, prisoner sacrifice and portraits of important individuals all signal a time of strong political leaders. Some scholars see the battle imagery in Moche murals and ceramics as more ceremonial than real (pitting Moche against Moche). In Luna at Moche and at Sipán. Yet somehow the southern sphere seems to have briefly dominated the northern one, then later the north seems to have had more power, and finally both collapsed around the time that the Wari were beginning their state. Throughout this trajectory the northern sphere was more self-contained (and this cohesion was carried forward by the subsequent Lambayeque culture). Its capital was Pampa Grande, which eclipsed Moche during the later northern fluorescence."