After the fourth crusade, supporting among europeans for the crusades
grew even stronger
began to decline
stayed the same
collapsed

Began to decline

Explanation:

The Fourth Crusade (1202-1204) begun with the intention of taking the Holy Land, then in Muslim hands, through the conquest of Egypt. However, the crusade was diverted from its original purpose and the Crusaders, together with the Venetians, seized and sacked Constantinople, a Christian capital city of the Byzantine Empire.

Not achieving set goals was one of the reasons that the crusades started losing support.

The answer on eDgenUiity is:

B)  Began to decline

a standing committee

explanation:

1. it was caused by feudalism

2. charlemagne used christianity as a major cornerstone for his rule. cloisters were built all over the empire to act as centers for the (re)population of the vast european wilderness.

3. the europeans feared the next raid every time chetak

i'm not so sure about #6. but i hope i you with the first 3.