the crusades?

Question

what was the prove failed that the crusade failed its original purpose

Answer 1

The Crusades were a series of separate wars that were originally started to drive the Muslims out of the Holy Land and take back Jerusalem which the Muslims had taken over. Some of the Crusades were won by one side and some by the other. They eventually were no longer called by the church and then were discontinued by the European princes due to expenses. Many European princes became lords in the Middle East as well
Jerusalem is no longer in Muslim hands.
However, todays wars can be seen as a continuation of the Crusdaes. They also took a decidedly bad turn when one was called against the fellow Christian city of Constantinople by Rome and the Doge of Venice and began the Great Schism. Many Christians wanted nothing more to do with the Crusades when the purpose was greed and not Holy War for religious purposes.
The thinking of it being about oil is all wrong as this started well before oil was discovered there, it is more about religion and power and control of the Middle East than about anything else.
They go on today and we can see Jihad as being the Muslims calling these current Crusades.

Answer 2

What do you mean by your question? Are you asking why the Europeans didn't win?

Well lets see, the Crusades was a holy war between Musilims and Catholics (the Protestant Reformation had not yet taken place - all Christians were either Roman Catholic or Eastern Orthodox Catholic). The Popes pretty much wanted to control the wealthy Arabic lands and the trade routes for silks and spices; so they encouraged the nobles to raise armies to go fight the Musilims. Good idea, except they went about it poorly.

For starters, there was usually lots of arguing about who should lead the armies. Each noble who went took his own army and didn't want to give up that army to another noble.

Then there were critical errors in supplies and equipment. The knights' armor of choice was full metal armor, not bad when the temperature is below 70 degrees (30 degrees C)- but when you wear it in the desert heat, you turn into a foil wrapped bake potato. Even the lesser soldiers wore heavily padded armor which cause problems with heat stroke.

Food supplies were scarce and the problems increased the longer the supply lines got.. Add in the costs of war horses which really took a beating and their replacements (if any could be found). Then add in the death rate from diseases and it was a miracle if a Christian survived the Crusades.