Which of the regions or nations did Alexander not conquer?

Italy

Indus valley

egypt

china

mesopotamia

China

Alexander the Great conquered many countries including Italy, Indus Valley, Egypt and Mesopotamia. He was known as the King of Macedonia and the conqueror of the Persian Empire. He is the greatest military geniuses of all times. He was seeking to reach the "ends of the world and the Great Outer Sea". He spent most of his years having military campaigns through Asia and Northeast Asia. He created one of the largest empires of the ancient world from Greece to modern-day Pakistan.