Pope Urban ll made the decision to launch the first crusade in 1095. He achieved this by giving a public speech in which he accused the Muslims of many atrocities against the Christians who were living in Jerusalem. One reason, why the Pope decided to launch the first crusade was that, the Byzanthine Emperor has written him a letter asking him for help against the Muslims. The Pope may have made this decision too in order to increase his papacy influence.
Planets asteroids and comets
the belief that humans may be divided into separate and exclusive biological entities
It was "B. Philippe de Vitry" who was a Medieval composer and was also a politician and author famous for his writings on music theory, since at the time not many people knew the fundamentals of such theory.
The Northeast did not agree with the Mexican War.
