Read the following passage:

The countries — –, the [Northerners] in their isles were disturbed, taken away in the [fray] — at one time. Not one stood before their hands, from Kheta, Kode, Carchemish, Arvad, Alashia, they were wasted. {The}y {[set up]} a camp in one place in Amor. They desolated his people and his land like that which is not. They came with fire prepared before them, forward to Egypt. Their main support was Peleset, Tjekker, Shekelesh, Denyen, and Weshesh. (These) lands were united, and they laid their hands upon the land as far as the Circle of the Earth. Their hearts were confident, full of their plans.

-Excerpt from an Egyptian account of an attack by a group the Egyptians called the “Sea Peoples”

Then answer the following question, using the excerpt as a source:

Why do you think so many different ancient civilizations collapsed around 1200 BCE (the “crisis of 1200 BCE”)?