The crusades lasted for almost two hundred years.

A crusade is a “military expedition made by Europeans to recover the Holy Land from Muslims in the 11th, 12th, 13th centuries.” These Holy wars were brutal campaigns launched by Christian states of Europe against the Saracens, this was the word used for Muslims during the middle ages, for many reasons such as politics, religion and social change....

The Third Crusade: King's Crusade Introduction and General Notes:-

The total purpose of the crusades was to gain control and power of Jerusalem; the Holy Land.

The meaning of the word crusade comes from the word cross.

Harris argues that a key to the understanding of the interaction between Byzantium and the Latin West lies in the nature of the Byzantine imperial ideology. The Byzantines considered Constantinople both the political centre of the Christian world and a holy city, a new Rome and second Jerusalem. This standing was illustrated by the city's strength, size and wealth, imperial and ecclesiastical buildings, as well as relics (Chapter 1). The emperor's standing in the family of rulers, as leader of the Oikoumene or world order was the second basic element of the Byzantine ideology. The principles upon which the emperors based their dealings with foreign powers and the crusaders were expressed by a small and influential group of civil servants with classical education, who served as their advisers on domestic and foreign policy and as their ambassadors. Despite the classical ring of their treaties, letters, manuals, panegyrics and writings of history, they had a good knowledge of contemporary realities. The traditional display of wealth, magnificence and pomp to impress foreigners, generous grants of imperial honorific titles and subventions in coins and silks, cunning diplomacy to divide opposing forces and military force were all used in order to preserve the security of the empire and the emperor's standing (Chapter 2).

Battle of Nicopolis sometimes called the 'last' Crusade

The Pope wanted to unite western and eastern Christians under his authority. He diverted this Crusade, with the help of Venice, and captured Constantinople in 1204. Christians fought Christians.

The purpose of the Crusades was to gain and keep control over Palestine from the Muslims.

The Crusades had a great impact on the world that will last forever.

According to Harris (Chapter 9), this perception and Byzantium's failure to make what the Latins considered to be the rightful financial contribution to the recovery of Jerusalem were the two factors leading directly to the Latin conquest of Constantinople. These same arguments were used by western writers to justify the first conquest of Byzantine territory, namely that of Cyprus by King Richard I of England in 1191.(pp. 141-42) In 1195 the western emperor Henry VI exerted strong pressure on Byzantium to provide financial assistance for a crusade, a precedent followed by Innocent III in 1199. In 1202 the pope issued a thinly-veiled threat to Alexios III that force could be used against Byzantium if it did not comply. Although he neither advocated nor condoned an attack on the empire, his pronouncements allowed the participants in the Fourth Crusade to believe that it was justified.(pp. 149-152)

Historians disagree about what to include as 'the Crusades', but a sensible list would include:

Western Europe was brought out of the dark ages by the crusades.

Yet, behind all of this would lead to some of the worst moves the church has made and lead to not only the death of countless crusaders and Muslims but, also cause a weakening in the eastern defenses, that the Muslims would take advantage of against the Eastern Roman Empire, also known as Byzantium.

An army of French and Hungarian knights was . Some historians refer to it as the 'last' Crusade.

The First Crusade ( 1096-1099).

As the twelfth century sprung into action, China began to stitch books together, the first prisoner of the Tower of London escapes, and the Second Crusade, which ended in the army surrendering, began....

In the end the Crusades did not have a clear victor, but influenced our world today greatly.

The Crusades were a series of “Holy Wars”.

The extent of the crusades shows the deep devotion that most of Western Europe had towards Christianity and the desire to rid the world of unnecessary evils....