The principle of collective responsibility states that the ministers are responsible collectively for the consideration, determination and coordination of the main lines of policy and for the conduct of the departments of government, each minister is also responsible for the management of his individual department.

The Plan of Iguala, also known as the Plan of the Three Guarantees or Act of Independence of North America, was an important document of a political nature, proclaimed by the military Agustín de Iturbide on February 24, 1821, in the city of Iguala, Mexico.