Brief SynthesisThe Sacred City of Caral-Supe reflects the rise of civilisation in the Americas. As a fully developed socio-political state, it is remarkable for its complexity and its impact on developing settlements throughout the Supe Valley and beyond. The design of both the architectural and spatial components of the city is masterful, and the monumental platform mounds and recessed circular courts are powerful and influential expressions of a consolidated state. The middle Supe Valley, where the site is located, is an area dedicated to non-industrialised agriculture. Radiocarbon analysis carried out by the Caral-Supe Special Archaeological Project (PEACS) at the Caral site confirms that the development of the site can be located in time between the years 3000 to 1800 B.C.