What was the Trojan war

"The Trojan War, in Greek tradition, started as a way for Zeus to reduce the ever-increasing population of humanity and, more practically, as an expedition to reclaim Helen, wife of Menelaos, King of Sparta and brother of Agamemnon. Helen was abducted by the Trojan prince Paris (also known as Alexandros) and taken as his prize for choosing Aphrodite as the most beautiful goddess in a competition with Athena and Hera at the wedding of Peleus and Thetis. Menelaos and the Greeks wanted her back and to avenge Trojan impudence."