The thought or idea of one nation becoming communist would lead to the fall of its neighbors to communism was known as

The correct answer is C. A wish to avenge the Persian attacks on Greece in the fifth century B.C.; to eliminate any further threat from Persia; and also to satisfy his own desire for adventure.

Explanation:

Alexander the Great was a prominent king in Ancient Greece known for expanding the empire by invading and conquering territories beyond Greece including territories in North Africa and the Near East. The motivations for this expansion were multiple, to begin with, Alexander was a young king with a strong desire for adventure as he wanted to explore unknown territories and expand the Greek culture.

Also, Alexander was motivated by the Persian Empire that was located in the Near East and represented a thread for Greece. Indeed, before Alexander the Great overthrown the king of Persia Darius III Persia had attack Greece multiple times. Therefore, by conquering the territory and overthrowing the King, Alexander could eliminate the threat and avenge previous attacks. Thus, the option that best describes the motivations of Alexander is C.