It was the Crusades
Becaues if you wanted to travel on land, it was either that or walk.
Three type of travel were readily available depending on your economic status. Foot Horse Boat
I do SOS school program and the answer on this was the crusades
You had to gather your army, supply it and then travel (by land or ship) to the Holy Land.
Trade.
The question is confusing. The Crusades are the name of the wars, not things or people, so they cannot travel to Jerusalem or anywhere else, save the minds of people who think about them. As for where the battles and travails of the Crusaders would take them, No, there were numerous battles and paths along the Mediterranean Coast on the road to Jerusalem from Europe.
The Crusades had a definite impact upon interest in the orient. Long after the Crusades were over, merchants still used the same pathways (first used by the crusading armies) as trade routes to the orient.
Trade to Europe western Europe group
There are two types of crusades: the political crusades and the religious crusades. The crusades are used to win new converts and inform. Political crusades are usually used for power and fame.
it took a lot of time to gather your army, supply your army and then travel to the target destination to attack by ship or by foot
well,first of all the crusades had to travel huge distances just to reach the war. Many died along the way. Second, crusades weren't prepared to fight in the Palestines desert climate. Third the Christians were outnumbered by their well-led and organized Muslim foes, and fourth Christian leaders fought among themselves and planed poorly. so there you have it the reasons for their failure the Crusades just as they had started so many years before, whit the Holy Land under Muslim control.