_____ vastly expanded Persian territories, establishing the _____, which was the largest the world had ever seen.
A. Alexander the Great; Athenian Empire
B. King Darius; Hellenistic Empire
C. Cyrus the Great; Persian Empire
D. Leonidas; Spartan Empire
C. It's the only one that makes sense. King Darius was Persian, Alexander the Great was Macedonian, Leonidas was Spartan, and Cyrus was Persian. If you know their names, it is just a process of elimination.
