Mexico's 1814 Constitution was written to create a fair government of laws, which is like a set of rules that everyone should follow. It said that people should have certain rights like the right to vote, the right to speak freely, and the right to own property. It also said how the different types of government officials should be chosen, and how they should act in their roles. It also said that everyone should get a fair trial if they are accused of breaking the law. In short, the Constitution helped to create a country in which everyone's rights were respected.