How is the second crusade different from the first?

Explanation:

The Second Crusade, besides Edessa, had additional objectives in Iberia and the Baltic, and both campaigns were backed by the Pope. The crusaders who were to sail to the east were perhaps used in Iberia because they had to delay their departure in order for the land armies to make their slow progress to the Levant.

answer: stupidity. they should wait till they can get reward money.

answer; biological;