COMPREHENSION AND CRITICAL THINKING Read each of the following groups of sentences, and put them in sequence in the blanks provided. 40. a. Wealthy citizens flee the city of Rome to their country estates. b. Attila leads the Huns on a raid of the Roman territory in the east. c. Barbarians attack Rome's northern borders. d. Constantine reunites the two halves of the Roman Empire. Can someone help me put these in sequence?​

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).

answer: (fluidity)is the correct answer.

explanation: because of this characteristic, success on the battlefield depends in large part on the ability to adapt to proactively change events to our advantage as well as to react quickly to constantly changing conditions

food chain i would say only because there is competition on getting food and survival