Blood purity laws elevated poor Christians while excluding converts from power.

Evidence

Under the conditions of Christian reconquest of Iberia, purity of blood was simultaneously a natural and cultural notion, used for a clear political project: first, to elevate the population of poor Old Christians; second, to deny converted Jews and Muslims access to public and ecclesiastical office; and third, to exclude them from economic, social, and political resources. — Deepa Kumar, Islamophobia and the Politics of Empire, 119

Categorization

Category: Factual Claims