Acause of the first crusade was the

conquest of constantinople by the ottoman turks

invasion of spain by the muslim arabs

attack by the muslims on rome

conquest of asia minor by the seljuk turks

martin luther king (1929-1968) was an activist for the african american rights, mr. king has a profile of a kind leader that built a tenacity, respect and full of hope future. he was an activist through civil disobedience and no violence pressure mechanisms. he tried to build a more egalitarian and fair society. his efforts carried a reivindication message of the civilian rights to every west corners. for that reason, he won the nobel prize in 1964.