Concentric castles - with two curtain (outer) walls - were developed during the crusades, and these ideas were used to improve and fortify castles back in Europe. Islamic armies had used gunpowder ...
In the Middle Ages, the Islamic world close Islamic worldSocieties ... priest Peter the Hermit who is encouraging men to go on a Crusade In the medieval period, peasants had to give 10 per ...
The First Crusade was one of the most extraordinary, bloody and significant episodes in medieval history. It began with ... threatened by the rising power of the Muslim Seljuk Turks.