the self-presumed "superior" party to appropriate territory, human chattel, or material wealth often have been more ruthless, more brutal, and less constrained by moral or ethical considerations. According to historian Daniel Richter, Pontiac's Rebellion saw the emergence on both sides of the conflict of "the novel idea that all Native people were 'Indians,' that all Euro-Americans were 'Whites,' and that all on one side must unite to destroy the other". Basil Davidson states in his documentary, Africa: Different but Equal, that racism, in fact, only just recently surfaced as late as the 19th century, due to the need for a justification for slavery in the Americas. Historically, racism was a major driving force behind the Transatlantic slave trade. It was also a major force behind racial segregation, especially in the United States in the nineteenth and early twentieth centuries, and South Africa under apartheid; 19th and 20th century racism in the Western world is particularly well documented and constitutes a reference point in studies and discourses about racism. Racism has played a role in genocides such as the Armenian genocide, and the Holocaust, and colonial projects like the European colonization of the Americas, Africa, and Asia. Indigenous peoples have been—and are—often subject to racist attitudes. Practices and ideologies of racism are condemned by the United Nations in the Declaration of Human Rights. Ethnic and racial nationalism After the Napoleonic Wars, Europe was confronted with the new "nationalities question", leading to reconfigurations of the European map, on which the frontiers between the states had been delineated during the 1648 Peace of Westphalia. Nationalism had made its first appearance with the invention of the levée en masse by the French Revolutionaries, thus inventing mass conscription in order to be able to defend the newly founded Republic against the Ancien Régime order represented by the European monarchies. This led to the French Revolutionary Wars (1792–1802) and then to the conquests of Napoleon, and to the subsequent European-wide debates on the concepts and realities of nations, and in particular of nation-states. The Westphalia Treaty had divided Europe into various empires and kingdoms (such as the Ottoman Empire, the Holy Roman Empire, the Swedish Empire, the Kingdom of France, etc.), and for centuries wars were waged between princes (Kabinettskriege in German). Modern nation-states appeared in the wake of the French Revolution, with the formation of patriotic sentiments for the first time in Spain during the