Over 500 massive Gothic cathedrals were built in Europe during this age (1170 - 1270).
The term "Goth" can also be considered for the Gothic Cathedrals. They almost looked like dungeons because of how dark their style was.
Jerusalem was controlled by the Muslims in the late eleventh century. It was Islam's 3rd holiest City, after Mecca & Medina. It's the Holy City to Jews and its also a holy city to Christians. Since three different religions all share Jerusalem as one of their holy cities, there are conflicts up to this day.
In 1093, the Emperor wrote a letter to Pope Urban II, telling him to help him in the war against the Turks. This is where the Isis conflicts began, because to this day, extreme Muslims are still mad at Christians after hundreds of years, and we are still at war with them.
After the letter, the pope tells Christians to take the cities back from the Muslims.
In the Crusades:
-Religious Intolerance grows
-Pope's power declines
-Trade grows between Europe and the Middle East.
-Europeans technology improves as Crusaders learn from Muslims