Updated October 25, 2016. Definition: A budget deficit is when spending is greater than the revenue received for that year. That's known as deficit spending. The national debt is the accumulation of each year's deficit. When revenue exceeds spending, that creates a budget surplus.
Quick Answer. Mexico gained independence from Spain on Sept. 27, 1821. On Sept. 16, 1810, Miguel Hidalgo y Costilla declared independence from Spain by issuing the Grito de Dolores and launched the Mexican War of Independence. The war ended with the signing of the Treaty of Cordoba on Aug. 24, 1821.
The last viceroy of New Spain in Mexico signed the Act of Independence on 28 September 1821. On 3 October 1821, the captaincy general of Guatemala (Chiapas, Costa Rica, El Salvador, Guatemala, Honduras, and Nicaragua) was also joined to the Mexican empire.