WORLD CIVILIZATION

Detailed explanation-1: -In 334 B.C.E., Alexander invaded Persia, which lay across the Aegean Sea in Asia Minor (modern-day Turkey). After three grueling years of warfare and three decisive battles, Alexander smashed the Persian armies at the Tigris River and conquered the mighty Persian Empire, including the legendary city of Babylon.

Detailed explanation-2: -Persia was eventually conquered by Alexander the Great in 334 B.C.E. (356-323 BCE) Greek ruler, explorer, and conqueror.