The Spanish american revolutions shaped by the american, french, and Haitian revolutions that happened Promoted radical notion that human political and social arrangements could be engineered and improved by human action,new ideas of liberty, equality, free trade, religious tolerance, republicanism, and human rationality were in the air,politically, the core notion was "popular sovereignty," government authority derived from the people,idea that it's possible to start over the construction of human societies.It marked a decisive political change and brought legitimacy to the idea of democracy ,the kind of society that came with the colonies was revolutionary.