What was one of the factors that caused the Industrial Revolution? There were a series of events that caused people to riot and demand work.
Famine and disease forced people to find better living conditions.
Machines were invented that could work faster and do more than humans.
People were looking for a better way of life.

just finished this it is b. centrifugal force

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).