What was the most important result of the crusades?

Additionally, Pope Urban II announced for all Christians to consolidate and war with the Muslims to recapture charge of the Holy fields. After four Crusades, the Muslims gained the power of the Holy Lands. Though, the Crusades ended in enhanced business in Europe and the expansion of towns. The whole composition of European culture transformed through the 12th and 13th centuries, and there was a period when this transition was associated broadly with the Crusades. Historians presently, though, manage to observe the Crusades as just one, albeit important, a circumstance in Europe's construction.

c it says nothing about connecting those 2 seas.