Repartimiento was a labor system instituted by Spanish colonial authorities that required indigenous people to work for Spanish landowners for a certain number of days each year. This system emerged during the Spanish conquest and colonization of the Americas and was designed to facilitate the extraction of resources and labor from indigenous populations while ostensibly protecting them from exploitation. However, it often led to harsh conditions and significant abuses, contributing to the broader colonial social structures, including the casta system that defined racial hierarchies in colonial society.