The Islamic people had the achievements of mathematics, literature, art, medicine, science, and geography.
The Greeks and Romans had first established this literature thing but the Islamic people people made it more advanced. The Greeks had written on stone, than came the Romans with a type of paper. Then the Islamic people made books and scroll.
Pope Urban II was a big part of the crusades. He made people want to fight, he said if you fight for the Holy Land all of your sins will be forgiven.
Saladin had a big part in the Crusades because he was the Islamic ruler.
King Lionhart was the leader of the crusades while fighting.
The crusades had an impact on the world today, especially western Europe. The first impact is culture. Culture is very important and so is the Holy Land. Next, The impact on the fighting and feudalism. Europe does not have feudalism anymore because of the war. Last, the impact on a trues. Since the Islamic people have the land it shows that everyone can share.