Colonialism's emphasis on imperialism, land dispossession, resource extraction, and cultural destruction frequently resulted in genocidal practices aimed at attacking Indigenous peoples and existing populations as a means to attain colonial goals. According to historian Patrick Wolfe, "[t]he question of genocide is never far from discussions of settler colonialism." Historians have commented that although colonialism does not necessarily directly involve genocide, research suggests that the two share a connection.
States have practised colonialism during various periods in history, even during progressive eras such as the Enlightenment. During the Enlightenment, a period in the history of 17th- and 18th-century Europe which was marked by some progressive reforms, natural social hierarchies were reinforced. Europeans who were educated, white, and native-born were considered high-class, whereas less-educated, non-European people were considered low-class. These "natural" hierarchies were reinforced by progressives such as the Marquis de Condorcet (1743-1794), a French mathematician, who believed that slaves were savages due to their lack of modern practices, despite the fact that he advocated the abolition of slavery. The colonization process usually starts by attacking the homes of its targets. Typically, the people who are subjected to colonizing practices are portrayed as lacking modernity, because they and the colonialists do not have the same level of education or technology.
