It started by the Troy kidnapping the Greeks wife and the Troy tried to have a baby with the Greeks wife then the Greeks king became angry and that was what started the Trojan War.
How long did it last? How did it end
The Trojan war lasted for about 52 days during the ten-year conflict.
The trojan war ended by the greeks invaded the walled city but failed and pretend to give up and when there left the greeks gave the Troy a present and it was a giant wooden horses but inside the horse was the army and surprise them and won.
Who fought in the Trojan War?
The two armies that fought in the Trojan war were the Greeks and the Troys.
How do we know this?
The historians know this because they research all the information about it and study it. Then they put it in books and other things to teach other people about it too. Did this war really happen?
Nobody really knows if the Trojan war really happened or not. Most people don't believe that it really happened. The Trojan war belongs in the myth category because of all the people that don't believe it happened.