The name also generally describes parts of the Iberian Peninsula governed by Muslims (given the generic name of Moors) at various times after 711 (92–93 AH), though the boundaries changed constantly as the Christian Reconquista progressed. After the Battle of Las Navas de Tolosa (1212 AD / 609 AH) the frontier between Christian north and Muslim south permanently settled along the Tagus River and Toledo. To the south of Aragon and along the Júcar River the boundary is less settled and has changed sides several times during the Reconquista. Historical polities of Al-Andalus: