Why might the unification of Indonesia be difficult to achieve? A Location in the World
B. Indonesia size, diversity, and proximity
C. Indonesia's climate
D. All of the above

a.   it resulted in widespread unemployment.

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).