During his reign Charles V of Spain engaged in wars to

The correct answer to this open question is the following.

Although there are no options attached we can say the following.

During his reign, Charles V of Spain engaged in wars to expand the Catholic religion throughout Europe.

During his tenure, Charles V (1500-1558) exerted immense power in Europe. He was the Holy Roman Emperor, King of Castille and Aragon, and his power reached teh Netherlands as the Duke of Burgundy. He expanded his territories to the North of Italy, Germanic lands. unified Spain controlled Austria territories, and of course, his dominions in New Spain after Hernan Cortés had conquered teh Aztec Empire in Mesoamerica.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.