why did the crusades start wat they did?

Answer 1

to reclaim the holy land from the Muslims, the Muslims were attacking theByzantine empire and trying to force convert Christians.
see how things dont change unless you become muslim they will still kill you

Answer 2

This is a list of contents that you can find at wikipedia.org. It might be of interest to you. Good luck.

Contents
1 Historical context
1.1 Western European origins
1.2 Middle Eastern situation
1.3 Immediate cause
1.4 After the First Crusade
2 A list of the crusades
2.1 First Crusade 1095–1099
2.1.1 Crusade of 1101
2.2 Second Crusade 1145–1149
2.3 Third Crusade 1189–1192
2.4 Fourth Crusade 1201–1204
2.5 Albigensian Crusade
2.6 Children's Crusade
2.7 Fifth Crusade 1217–1221
2.8 Sixth Crusade 1228–1229
2.9 Seventh Crusade 1248–1254
2.10 Eighth Crusade 1270
2.11 Ninth Crusade 1271–1272
2.12 Northern Crusades (Baltic and Germany)
2.13 Other crusades
2.13.1 Crusade against the Tatars
2.13.2 Crusades in the Balkans
2.13.3 The Aragonese Crusade
2.13.4 The Alexandrian Crusade
2.13.5 The Hussite Crusade
3 Historical perspectives on the Crusades
3.1 Western versus Eastern interpretation
3.2 1908 Catholic Encyclopedia perspective
3.3 Eastern Orthodoxy
3.4 Popular reputation in Western Europe
4 Legacy of the Crusades
4.1 Europe
4.1.1 Politics and culture
4.1.2 Trade
4.1.3 Wider geo-political effects
4.2 Islamic world
4.3 Jewish community
4.4 The Caucasus
5 Etymology and use of the term "crusade"
6 See also
7 References and further reading
8 Notes
9 External links

Answer 3

In my opinion the Crusades started as a result of hate and intolerance. The crusaders hated the idea of the Holy Land being in the possession of the Muslims. These crusaders claimed to be acting in the Name of God and/or Jesus Christ. But just making the claim doesn't make it so. These characters decided they were justified in killing all Muslims -and Jews sometimes, too- in order to purge from the Holy Land anything that they perceived as non-Christian and/or unholy. Just my opinion

Answer 4

Because the Islamofascists have been around for thousands of years.