Which of the following has had the greatest impact on South America's physical geography? Group of answer choices

its position between the Atlantic and Pacific Oceans

its numerous, large water systems

the heavy tectonic activity in the area

its many mountain systems

the heavy tectonic activity in the area

Explanation:

"The heavy tectonic activity in the area" had the greatest impact on South America's physical geography. This is true because the heavy activity of the tectonic in the area such as plate motions resulted in the formation of mountains and oceans in South America.

For example, the formation of the massive Andes Mountains and the formation of various volcanoes resulted from heavy activity of the tectonic in the area.

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.