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.
Led by Hidalgo and Ignacio Allende, a former captain in the Spanish army, it won several battles along the way to Mexico City but was eventually defeated in January 1811. It wasnât until 10 years later, on Sept. 27, 1821, that Mexico finally won independence from Spain.