 As a relatively minor kingdom, it received little financial or military support from Europe; despite numerous small expeditions, Europeans generally proved unwilling to undertake an expensive journey to the east for an apparently losing cause.The Mamluk sultans Baibars (reigned 1260-1277) and al-Ashraf Khalil (reigned 1290-1293) eventually reconquered all the remaining crusader strongholds, culminating in the destruction of Acre in 1291.The kingdom was ethnically, religiously, and linguistically diverse, although the crusaders themselves and their descendants were an elite Catholic minority.