When you use it
Reach for this when a question asks which crusade attacked Christians, or about the sack of Constantinople in 1204.
Watch out
The fourth crusade (1202-1204) fought other Christians, not Muslims. The crusaders helped Venetian merchants defeat their Byzantine rivals in 1204, then captured and looted Constantinople. Do not describe it as a holy war against Muslims.
Drafted from Grade 11 History, pages 74-118, then checked twice before it went up

