An official appointed by a government to live in a foreign city and protect and promote the government's citizens and interests there.
"the British consul in Israel
Similar to an ambassador
Astronomy mathematics medicine and physics
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
A concept that medieval England had was common law, which is the same that we share in the U.S government. Common law is one of the main pillars of the government.
Have a nice day! :)