Would someone mind helping me? I really need this answer but I'm so confused. I would appreciate any help :) and if you get the answer right, ill give you brainliest.

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.

Explanation:

so A  :)