Colonies were considered essential to supply natural resources and other essential goods. French colonisation was not based only on economic exploitation. It was also driven by the idea of a ‘civilising mission’. Like the British in India, the French claimed that they were bringing modern civilisation to the Vietnamese. They took for granted that Europe had developed the most advanced civilisation. So it became the duty of the Europeans to introduce these modern ideas to the colony even if this meant destroying local cultures, religions and traditions, because these were seen as outdated and prevented modern development.