The correct answers are A) Increase in power of the Italian city-states. C) Travel drove the interest in foreign trade. D) Strengthening of the feudal system.
The three significant impacts of the Crusades were "Increase in power of the Italian city-states, "travel drove the interest in foreign trade., and "the strengthening of the feudal system."
The Crusades began when the Catholic church ordered to capture the city of Jerusalem from the Muslin hands. The First Crusade was in 1096
and the last one, in 1271. Islamic rule at that time ruled what was considered the Holy land for the church, and the goal was to recover that land for the Christians.
The Crusades increased the power of the church, formed new orders that fought in the name of God, and produced territorial expansions as well as the development of trade in the region.