The seigneurial system was a land distribution and social structure used in New France, where land was divided into seigneuries and granted to seigneurs who managed the land and its inhabitants, known as censitaires. This system was crucial for agricultural development and settlement in New France, establishing a feudal-like relationship that linked the nobility to the peasantry. The structure allowed for the growth of a stable rural society, which was important for the sustainability of French colonial interests in North America.