How were the accomplishments of Simón Bolívar and José de San Martín similar?
A. Both helped liberate much of South America from Spanish rule.
B. Both led slave revolts that forced the French to give up Haiti.
C. Both worked to defeat Portuguese forces in Brazil.
D. Both established monarchies in the South American countries they
conquered.

A) Both helped liberated much of South America from Spanish rule.

i believe 5 is correct answer

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).