Answer A its true of the economy of the east
Answer: The first Crusade was successful for European leaders they were able to have some cities such as Jerusalem, Acre, Bethlehem, and Antioch. But after that things go wrong.
The political perspective was a failure.
Although they did not fully achieve their religious goal, the Crusades promoted major changes across Europe, such as the reopening of the Mediterranean to European shipping and trade. This made it possible to intensify trade between the West and the East, largely interrupted by Muslim expansion.
B. an elected school board
<span>Some causes were:
-Corruption was one of the main reasons for the decline, to gain power a military general might bribe officials and soldiers guarding the wall of the city to overthrow the empire
-Most Byzantine emperors were not capable of keeping a successful army and were often incapable of leading their troops as well
-The Empire lost many important territories
-There are other reasons I cannot really think of right now</span>