Kingdom of Jerusalem

The Kingdom of Jerusalem, also known as the Crusader Kingdom, was one of the Crusader states established in the Levant immediately after the First Crusade. It lasted for almost 200 years, from the accession of Godfrey of Bouillon in 1099 until the fall of Acre in 1291. Its history is divided into two periods with a brief interruption in its existence, beginning with its collapse after the siege of Jerusalem in 1187 and its restoration after the Third Crusade in 1192.

The original kingdom lasted from 1099 to 1187 before being almost entirely overrun by the Ayyubid Sultanate under Saladin. Following the Third Crusade, it was re-established in Acre in 1192. The re-established state is commonly known as the "Second Kingdom of Jerusalem" or alternatively as the "Kingdom of Acre" after its new capital city. Acre remained the capital for the rest of its existence, even during the two decades that followed the Crusaders' establishment of partial control over Jerusalem during the Sixth Crusade, through the diplomacy of Emperor Frederick II.

The vast majority of the Crusaders who settled the Kingdom of Jerusalem were from the Kingdom of France, as were the knights and soldiers who made up the bulk of the steady flow of reinforcements throughout its 200-year existence; its rulers and elite were therefore predominantly French. Over the course of its history, the Kingdom of Jerusalem became increasingly dependent on and influenced by the Italian maritime republics of Venice and Genoa, especially after the kingdom’s capital effectively moved to the port city of Acre.