Answer:
its the fisrt one. ive had that one before
Explanation:
I think it would be the failure to pass treaties. European nations are often in conflict over land territories and vast riches of the country. Another reason why the European countries always care in conflict, it would be religion. Many of them are firm believers Christianity. I think this was the reason why there was Crusades occur.
I would rule out B and C because they didn't do much good they killed people who didn't change religion. I would go with D because they forced people to change to their religion.
Answer:
"less or no freedom exercised by the nomads".
Answer: B i hope this helps =D