How did the Latin Kingdom of Jerusalem govern conquered lands?

The Latin Kingdom of Jerusalem governed its conquered lands through a structure that initially resembled a typical European monarchy, though it evolved significantly over time.1

Governance and Legal Structure

The kingdom was based on a code of law known as the Assizes of Jerusalem, which helped the king enforce authority and settle succession disputes among his vassals. While the king initially held strong judicial rights and a significant royal domain, the rise of a powerful baronial class—organized in the High Court—eventually challenged royal authority.21

Social and Religious Administration

• Ecclesiastical Hierarchy: The Crusaders established a Latin church hierarchy, replacing existing leaders. The church maintained its own courts and properties, though it was required to provide military support.3
• Diverse Population: The ruling Christian minority governed a large, diverse population. Despite initial ruthlessness, the administration was generally tolerant; Muslim peasants were permitted to retain their holdings, and Bedouin nomads were granted traditional rights of pasturage.3
• Military Orders: The Templars and Hospitallers acted as nearly independent, international organizations that held strategic castles and provided essential military support, often complicating the king's jurisdiction.3
• Economic Management: The government relied on trade with Muslims, taxes on pilgrims, and banking to fund its operations and defense. Italian merchants were granted exceptional privileges and semi-independent enclaves in port cities in exchange for vital naval support.23