What cataclysm occurred that eventually led to the moon's formation?

The cataclysm that occurred eventually leading to the moon’s formation is that the size of the planet mars has hit earth. Cataclysm is being defined as an event that is considered to be violent and that is likely to be in a large scale that occurs in the natural world.

it is the dominance of   the spanish language and roman catholic region in mexico, french being the official language of several african countries, and the existence of a western-style government in south asian countries