Alexander the Great.
As far as I know there was no ..."pension" (lol) empire that any greek leader conquered. In case you meant Persian Empire, it was Alexander the Great who conquered it.
Egypt was conquered by Cambyses II, the ruler of the Achaemenid Empire, the second of the four pre-Islamic Persian Empires
the leader of Persia was ahmadi nejad
Cyrus
Cyrus, leader of the Persian empire
Cyrus the Great.
Cyrus the Great.
Darius
Cyrus the Great.
Who was the leader of the Spanish army that conquered the Inca Empire? Francisco Pizarro in 1535 Who conquered the Aztec empire? Herman Cortes conquered the Aztecs in 1519.
Montezuma