""Isabella of Spain: The Last Crusader"" by William Thomas Walsh is a historical biography of Queen Isabella I of Castile, who ruled Spain from 1474 to 1504. The book explores Isabella's life, from her childhood to her rise to power, her reign, and her legacy. It covers her marriage to King Ferdinand II of Aragon, her role in the Spanish Inquisition, and her support for Christopher Columbus' voyage to the New World. The author also delves into the...