Saladin
everyone that wasn't cathlic
Europe WAS the Crusaders and they fought in the Middle East to take Jerusalem.
The muslims and crusaders fought against each other in the middle ages during the crusades.
The Muslim population of the Holy Land, who were in control of Palestine. Specifically, by about the 4th Crusade, Saladin's army.
The Crusades were the battle and a battle does not fight, soldiers in the battle fight. If your question was asking what the Crusaders were fighting for and who they were fighting against see the below link.
It was a struggle against communism.
muslims
everyone that wasn't cathlic
Islam
They were renowned for being pretty because they were immunized against smallpox.
saladin
The European Crusaders fought Saladin.
The Battle of Ascalon pitted the French Crusaders against the Egyptian Fatimid Caliphate.
Struggle against means to fight something off.For example- I was struggling against the temptation to eat that last slice of cake.
India has a big struggle for Independence. It struggled against the British.
Gandhi's struggle was the nonviolent movement against British rule in India.
The actions of the Muslims was to fight against the invading Crusaders.