What was the Imperial Crisis, and what effect did it have on the fall of the Roman empire?

Make it short and simple

The Imperial Crisis was a period of political and military upheaval in the Roman Empire characterized by assassinations, civil wars, and incompetence among emperors. This crisis weakened the empire's stability and enabled invasions by foreign tribes, contributing to the eventual fall of the Roman Empire in the late 5th century.

could you simplify it more

The Imperial Crisis was a time of chaos and instability in the Roman Empire. It weakened the empire and made it easier for enemies to attack, leading to the empire's eventual downfall.