What main event(s) led to the changes occurring in Latin America during the mid-1800’s?

Explanation:

The early 1800s radically altered the history of Latin America. Spain had progressively colonized parts of South, Central and North America since the early 1500s, exploiting the region's natural resources, decimating native populations and importing millions of black African slaves.

workers of lowell mills were greatly benefited for the waltham type of work which was more a paternalist kind, trying to protect the integrity of this little girls coming from small farmers and providing an adequate place of work, this in an effort to avoid the issues of bad place conditions and immorality that the people in bigger industrialized cities of great britain were experimenting.