General john pershings expedition to capture pancho villa was an attempt by the u. s.goverment to?

a. increase u. s. territory along the mexican border

b. demonstrate the military power of the nations cavalry

c. maintain control of the u. s. borders and protect its citizens

d. overthrow and reform the oppressive mexican government

C. Maintain control of the U. S. borders and protect citizens

Explanation:

When the U. S  provided rail transportation through the United States, from Eagle Pass, Texas to Douglas, Arizona, for the movement of more than 5,000 Carrancista forces to fight Villa at the Battle of Agua Prieta, Pancho Villa felt betrayed and began attacking U.S. nationals and their property in northern Mexico. Therefore the expedition of Villa began.

C.maintain control of U.S. borders and protect its citizens.

Explanation:

whole lotta ptsd going on

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).