Between 1870-1914, European powers aggressively expanded their colonial empires. Driven by nationalism, the need for raw materials and markets for their goods, as well as beliefs in their racial and cultural superiority, countries like Britain, France, Germany, Belgium, and others conquered most of Asia and Africa. This period of imperialism resulted in tensions as countries competed for territory and wealth from colonies, and had negative consequences for colonized peoples by disrupting their economies and societies.