Chimú Coastal Expansion in the 1120s

Timeline

1. c. 1121–1126Moche Valley · La Libertad RegionChimú rulers are believed to have consolidated the Moche Valley heartland through military campaigns and a vassal system, incorporating local chieftains into an administrative network paying tribute to Chan Chan, strengthening control over irrigated agricultural zones.
2. c. 1124–1129Lambayeque Valley · Lambayeque RegionArchaeological evidence shows Chimú power advancing north into the Lambayeque–Sicán cultural zone, absorbing its metalworking and ritual traditions while establishing Chimú-style administrative posts and road systems.
3. c. 1126–1130Chan Chan · La Libertad RegionExpansion was accompanied by the construction of fortress-like compounds (ciudadelas) within Chan Chan, with expanding adobe reliefs and storage facilities, demonstrating the Chimú monarchy's extractive capacity over subject valleys and its imperial ideology.