Why did intergovernmental Organizations often been in effective in addressing human rights abuses?

the intergovernmental organizations often been in effective in addressing human rights abuses because it is the duty of the government to save the human rights.

what class is this for i can then

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).