How Did The Collapse Of The Late Bronze Age System

Collapse of the Late Bronze Age system between the years of 1250-1150 BCE was unexpected and very sudden. This collapse not only happened in the Egypt but it occurred in all the great powers of Later Bronze Age such as the Hittites, the Mycenaean, the Canaanites or the Cypriots. Not only most of the major cities of these civilizations were destroyed but also many of these civilizations did not overcome this struggle and disappeared after the Bronze Age period. From the tomb inscriptions of Ramses III and Merenptah, we know there were foreign invaders attacking Egypt although we do not know if these foreign invaders were responsible for the collapse of Later Bronze Age. I think the collapse occurred because of the larger migration of people