Answer:
In 1807, Napoleonic forces invaded Spain under the pretext of arriving in Portugal, an ally of Great Britain, the great enemy of Napoleon's expansionist plans. Once the French forces arrived in Lisbon, the capital of Portugal, numerous French soldiers continued to cross the Spanish territory. Soon the Spaniards realized that Napoleon was carrying out a covert invasion of their territory, and in 1808 the Spanish crown abdicated in the name of Napoleon, who appointed his brother Jose Bonaparte king of Spain.
As a result, the Spanish forces began to carry out a war of independence against Napoleon's France, which lasted until 1814 and culminated in the Spanish victory and the restoration of the monarchy of Ferdinand VII.
While this conflict was developing, there was a situation of emptiness of power in the Spanish colonies in the American continent, so that in this situation the Latin American nationalists began to carry out revolts that ended up triggering in turn wars of independence of these Latin American nations. In that context, Spain, which was fighting on two fronts, could not avoid the independence of its colonies.