Why does the cursor not show up in Age of Empires 3?

The cursor may not show up in Age of Empires 3 due to several reasons, such as incorrect graphics settings, driver issues, or conflicts with other software. It can also occur if the game is running in windowed mode or if there are resolution mismatches between the game and your display. To resolve the issue, try updating your graphics drivers, adjusting the game's display settings, or running the game in compatibility mode.