The disagreement that was most influenced by the renaissance idea of humanism was The indulgences.
The church used the indulgences as a way to get more money to the church, rich people would give land and big amounts of money to parishioners. Luther was strongly against it and for him, the indulgences were the last straw.
Answer:
A (As far as my knowledge goes, I might be wrong)
Explanation:
A. Trade was increased, so this is the right answer
B. The European Christians did not win the Holy Land from the Muslims, so this is the wrong answer
C. Although art and music was inspired by the Crusades, it's subjective, and I'm assuming this isn't multiple choice.
D. The crusades was a fight over religion, this isn't even possible
It was formed by a group of representatives of the third estate
This policy created by John Hay was known as the Open Door Policy.
The goal of this policy would be to allow European countries and America to trade with China on an equal basis. John Hay wanted to ensure that no one country had a monopoly on the trade with China during the early 20th century. Along with this, he felt that the Open Door policy would result in less fights/confrontation between the countries involved in this trade.