Helen was abducted by the Trojan prince that's what started it
Answer:
Picture but most likely one answer would be Cold War
Explanation:
could you show the document?
One of the most important was climate changes. As climate changed, nomads had to find new places to migrate to which led to people going to areas that were uninhabited before. Another was the development of agriculture which more or less ended the nomadic way of life when people started settling.