Susa is the capital of Susiana.
Alexander held an expensive marriage ceremony which the Persian Princesses and other noble women were married to Macedonian Soldiers.
The wedding ceremonies lasted 5 days, held in a luxurious tent. Entertainers were recruited from all over the Greek
World
Alexander married 2 Princesses, (He had already married Roxane, daughter of a Sogdian Baron in 327BC) this time he married the eldest daughter of Darius (Barsine) and the daughter of Artaxerxes III. Hephaiston married another daughter of Darius so that Alexander was uncle to his children.

90 other marriages were celebrated. Each was given an impressive dowry by
Alexander (to improve relations with his troops)
Many marriages did not last after
Alexander’s death but were important as they symbolised the transfer of power to the Macedonians.
The weddings were another example of
Alexander’s P___ of F____
Alexander was now the Great King, he ruled as the absolute monarch