"Noblesse de sang" refers to the concept of noble status based on one's lineage or bloodline. This idea suggests that individuals inherit their noble status from their ancestors, often linked to aristocratic families. In many societies, this hereditary privilege was associated with certain rights, responsibilities, and social standing. Historically, the term has been significant in various cultures, particularly in Europe during the Middle Ages. It played a crucial role in defining social hierarchies and determining access to power, land, and titles, often leading to a rigid class structure that favored those of noble descent.