Crusades of the 15th century
Crusades of the 15th century are those Crusades that follow the Crusades after Acre, 1291–1399, throughout the next hundred years. In this time period, the threat from the Ottoman Empire dominated the Christian world, but also included threats from the Mamluks, Moors, and heretics. The Ottomans gained significant territory in all theaters, but did not defeat Hospitaller Rhodes nor advance past the Balkans. In addition, the Reconquista was completed and heretics continued to be suppressed.
Source: Wikipedia
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