Final answer:
The power shift in Spain with Napoleon's takeover led to the establishment of local juntas in Mexico, propelling the creole elites to push for Mexican independence and culminating in Mexico's independence in 1821.
Step-by-step explanation:
When Napoleon took power in Spain, the repercussions rippled through the Spanish Empire, including Mexico. With the Spanish monarchy captive, regional governing bodies called juntas emerged both in Spain and in its colonies. In Mexico, this led to the formation of a local junta, marking the beginning of self-rule and sparking a stronger desire for independence among creole elites. As internal turmoil and power shifts continued, creole elites and revolutionaries, inspired by Enlightenment ideals, saw an opportunity to push for greater autonomy and eventually, independence from Spanish colonial rule. Despite the installation of Joseph Bonaparte as the Spanish king, loyalty in the colonies waned and revolutionary sentiments flourished, leading to the Mexican War of Independence that began in 1810 and culminated in Mexico's independence in 1821.