Answer:
After three centuries of colonial rule, independence came rather suddenly to most of Spanish and Portuguese America. Between 1808 and 1826 all of Latin America except the Spanish colonies of Cuba and Puerto Rico slipped out of the hands of the Iberian powers who had ruled the region since the conquest. The rapidity and timing of that dramatic change were the result of a combination of long-building tensions in colonial rule and a series of external events.
The reforms imposed by the Spanish Bourbons in the 18th century provoked great instability in the relations between the rulers and their colonial subjects in the Americas. Many Creoles (those of Spanish parentage but who were born in America) felt Bourbon policy to be an unfair attack on their wealth, political power, and social status. Others did not suffer during the second half of the 18th century; indeed, the gradual loosening of trade restrictions actually benefited some Creoles in Venezuela and certain areas that had moved from the periphery to the centre during the late colonial era. However, those profits merely whetted those Creoles’ appetites for greater free trade than the Bourbons were willing to grant. More generally, Creoles reacted angrily against the crown’s preference for peninsulars in administrative positions and its declining support of the caste system and the Creoles’ privileged status within it. After hundreds of years of proven service to Spain, the American-born elites felt that the Bourbons were now treating them like a recently conquered nation.
In cities throughout the region, Creole frustrations increasingly found expression in ideas derived from the Enlightenment. Imperial prohibitions proved unable to stop the flow of potentially subversive English, French, and North American works into the colonies of Latin America. Creole participants in conspiracies against Portugal and Spain at the end of the 18th and the beginning of the 19th century showed familiarity with such European Enlightenment thinkers as Thomas Hobbes, John Locke, Montesquieu, and Jean-Jacques Rousseau. The Enlightenment clearly informed the aims of dissident Creoles and inspired some of the later, great leaders of the independence movements across Latin America.
Still, these ideas were not, strictly speaking, causes of independence. Creoles selectively adapted rather than simply embraced the thought that had informed revolutions in North America and France. Leaders in Latin America tended to shy away from the more socially radical European doctrines. Moreover, the influence of those ideologies was sharply restricted; with few exceptions only small circles of educated, urban elites had access to Enlightenment thought. At most, foreign ideas helped foster a more questioning attitude toward traditional institutions and authority.
European diplomatic and military events provided the final catalyst that turned Creole discontent into full-fledged movements for Latin American independence. When the Spanish crown entered into an alliance with France in 1795, it set off a series of developments that opened up economic and political distance between the Iberian countries and their American colonies. By siding with France, Spain pitted itself against England, the dominant sea power of the period, which used its naval forces to reduce and eventually cut communications between Spain and the Americas. Unable to preserve any sort of monopoly on trade, the Spanish crown was forced to loosen the restrictions on its colonies’ commerce. Spanish Americans now found themselves able to trade legally with other colonies, as well as with any neutral countries such as the United States. Spain’s wartime liberalization of colonial trade sharpened Creoles’ desires for greater economic self-determination.