One of the most important events of the 19th century was the rise of Indian nationalism, leading Indians to seek first "self-rule" and later "complete independence". However, historians are divided over the causes of its rise. Probable reasons include a "clash of interests of the Indian people with British interests", "racial discriminations", "the revelation of India's past", "inter-linking of the new social groups in different regions", and Indians coming in close contact with "European education".