Answer:
The Spanish colonization of the Americas began under the Crown of Castile and spearheaded by the Spanish conquistadors. The Americas were invaded and incorporated into the Spanish Empire, with the exception of Brazil, British North America, and some small regions in South America and the Caribbean. The crown created civil and religious structures to administer this vast territory. The main motivations for colonial expansion were profit and the spread of Catholicism through indigenous conversions.
Beginning with the 1492 arrival of Christopher Columbus in the Caribbean and gaining control over more territory for over three centuries, the Spanish Empire would expand across the Caribbean Islands, half of South America, most of Central America and much of North America. It is estimated that during the colonial period (1492–1832), a total of 1.86 million Spaniards settled in the Americas and a further 3.5 million immigrated during the post-colonial era (1850–1950); the estimate is 250,000 in the 16th century, and most during the 18th century as immigration was encouraged by the new Bourbon Dynasty.[1] It has been estimated that over 1.86 million Spaniards emigrated to Latin America in the period between 1492 and 1824, with millions more continuing to immigrate following independence.[citation needed]
By contrast, the indigenous population plummeted by an estimated 80% in the first century and a half following Columbus's voyages, primarily through the spread of Afro-Eurasian diseases.[2] This has been argued to be the first large-scale act of genocide in the modern era.[3] One can question whether the huge drop in population be considered genocide (a deliberate consciousness effort to erase a group(s) of people from the earth), since no one at the time knew about the unseen agents which caused the death of millions. Racial mixing was a central process in the Spanish colonization of the Americas, and ultimately led to the Latin American identity, which combines African, Hispanic, and Native American cultures.[citation needed]
One source claims the Spanish conquest was responsible for 1,400,000 to 2,300,000 deaths explicitly excluding tens of millions of deaths from New World disease;[4] while Rudolph Rummel claims that 2 to 15 million indigenous peoples where killed by what he calls "democide"-(government caused murder) in the colonization of the Americas mostly in Latin America[5]-(mostly implying anywhere from just over half to all but 1 so around 1,000,001 to 14,999,999 deaths.)
The Habsburg dynasty squandered the American riches in pointless wars across Europe, defaulted on their debt several times, and left Spain bankrupt. In the early 19th century, the Spanish American wars of independence resulted in the secession and subsequent balkanization of most Spanish territories in the Americas, except for Cuba and Puerto Rico, which were finally lost to The United States in 1898, following the Spanish–American War. The loss of these territories ended Spanish rule in the Americas.