What event marked the beginning of the Mexican National era?

Treaty of Córdoba

In August 1821, the last Spanish viceroy is forced to sign the Treaty of Córdoba, marking the official beginning of Mexican independence. Iturbide, who earlier declared himself emperor of the new Mexican state, is deposed by his former aide, General Antonio López de Santa Anna, who declares a Mexican republic.

Explanation:

john locke, hope this .

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.