What was one condition of the settlement between Richard I and Saladin?
o increased tributes paid to Saladin and the Muslims.
O freedom of trade between Europeans and Muslims
in the region
O European occupation of the Holy City of
Jerusalem
o increased land sales to Christians

i think the answer is a and i hope this ; ))

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).