The Wari () were a Middle Horizon civilization that flourished in the south-central Andes and coastal area of modern-day Peru, from about 500 to 1000 AD. Wari, as the former capital city was called, is located north-east of the modern city of Ayacucho, Peru. This city was the center of a civilization that covered much of the highlands and coast of modern Peru. The best-preserved remnants, beside the Wari Ruins, are the recently discovered Northern Wari ruins near the city of Chiclayo, and Cerro Baúl in Moquegua. Also well-known are the Wari ruins of Pikillaqta ("Flea Town"), a short distance south-east of Cuzco en route to Lake Titicaca. However, there is still a debate whether the Wari dominated the Central Coast or the polities on the Central Coast were commercial states capable of interacting with the Wari people without being politically dominated by them. History Archaeological evidence points toward the Wari empire taking control of a number of small villages in Peru's Carahuarazo Valley in approximately 600 A.D., during the empire's initial expansion. The incursion caused a number of the valley's existing villages to be abandoned, with one partially destroyed to make room for a Wari administrative center known as Jincamocco. The Wari introduced terracing agriculture to the area, shifting the staple crops of the valley from tubers to both tubers and maize. Wari storage structures have been found in the area, seemingly "paired" with some of remaining villages' agricultural sites; these were likely used to store both staple crops. Wari occupation of the Carahuarazo Valley lasted until roughly 800 A.D., leading to the abandonment of most of the valley's sites after that time. Early on, the Wari expanded their territory to include the ancient oracle center of Pachacamac, though it seems to have remained largely autonomous. Later, the Wari became dominant in much of the territory of the earlier Moche and later Chimu cultures. The reason for this expansion has been debated; it is believed to have been driven by religious conversion, the spread of agricultural knowledge (specifically terrace agriculture), or military conquest. Militarism and the associated threat/violence that comes with it has consistently played a part in the expansion and maintenance of ancient empires with Wari being of no exception. Evidence of the violence present in Wari culture is most visible at the city of Conchopata. As a result of centuries of drought, the Wari culture began to