Completed the following sentence: In 1198 the problem of Barbary piracy and slave-taking was so great that the Trinitarians, a religious order, were founded to collect ransoms and even to exchange themselves as ransom for those captured and pressed into slavery in North Africa. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️
Barbary Crusade"<unk> Morisco exiles of the Reconquista and Maghreb pirates added to the numbers, but it was not until the expansion of the Ottoman Empire and the arrival of the privateer and admiral Kemal Reis in 1487 that the Barbary corsairs became a true threat to shipping from European Christian nations.