Respuesta :
Feudalism declined during the Crusades because:
- B. Many knights lost their lives and fortunes in battle
Feudalism is a system of land ownership that was hierarchical in nature where the Lords sent their vassals to go to war for them and in return, they would give them lands.
During the Crusades, there were some military missions that were undertaken by the knights of which many of them lost their lives and it was a huge economic loss for the elites because of their loss of land.
Therefore, the correct answer is option B
Read more here:
https://brainly.com/question/2016823