All of the following were technological innovations that enabled exploration except what? A. Compass
B. Astrolabe
C. Gunpowder
D. Quadrant

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).

which

like dude you only explained

the problem not the

when in doubt choose c

it's what my teacher told my class when we were going into psats

independent innovation during the abbasid caliphate