It made Mexico into a federal republic, that was governed by a national president.
From what I've just quickly gathered through my brief research, I'd say it's B, E, and A
A pluralistic society is a society where there are many social groups, and where none of the groups is dominant over the other groups.
So all groups work together so that not one of them takes the power over the other groups by force. ("by force" is one possible answer).
