How did the fall of Acre in 1291 affect the Crusader states?

The fall of Acre in 1291 to the Mamluk sultan al-Ashraf Khalil marked the definitive end of Crusader rule on the Asian mainland. This event signaled the collapse of the Crusader states, as Acre had served as the final capital and stronghold for the kingdom of Jerusalem.1234

The consequences of this loss included:

• End of Mainland Presence: Following the city's capture, all remaining Crusader castles along the Mediterranean coast were systematically destroyed, and the ruling house of Lusignan was forced to retreat to the island of Cyprus.14
• Refugee Crisis: The fall of the city created a significant refugee problem, as many survivors of the siege were enslaved or displaced, leading to a concentration of remaining Crusader institutions and nobility on Cyprus.54
• Shift in Crusading Focus: The disaster dismayed Europe, but subsequent efforts to regain a foothold on the mainland failed. Consequently, the nature of the Crusades shifted from attempts to conquer the Holy Land to desperate, often unsuccessful, defensive efforts against the expanding Ottoman Empire in Europe.5
• Institutional Survival: While the mainland states were lost, the Assizes of Jerusalem and other Frankish institutions continued to influence the government and culture of the kingdom in exile on Cyprus.54