His success in conquering Sicily earned him the surname of "the Great."
An army gains a victory, and at once the rights of the conquering nation have increased to the detriment of the defeated.
The conquering Turks followed in their footsteps (560-580).
What boy doesn't dream of conquering the world?
Owing to its position, the Persian state, when it from time to time became a conquering empire, overlapped Asia Minor, Babylon and India, and hence acted as an intermediary for transmitting art and ideas, sending for instance Greek sculpture to India and the cult of Mithra to western Europe.