Which Macedonian general became satrap of Egypt after Alexander's death?

Ptolemy I Soter became satrap of Egypt after Alexander the Great's death. He was one of Alexander's trusted Macedonian commanders and transformed his provincial appointment into the foundation of a powerful new dynasty.

When Alexander died unexpectedly in Babylon in 323 BC, his empire was divided among his leading generals, known as the Diadochi. Ptolemy took control of Egypt and ruled it as satrap while competing with rival commanders for influence. He eventually declared himself king in 305 BC, adopting the title Ptolemy I Soter, meaning “Saviour.”

Ptolemy's rivals included Seleucus, who established the Seleucid Empire in Asia, Cassander, who controlled Macedonia, and Antigonus Monophthalmus. Unlike those figures, Ptolemy retained Egypt and founded the Ptolemaic dynasty. His descendants ruled Egypt for nearly three centuries, ending with Cleopatra VII in 30 BC.