The culture of the Democratic Republic of the Congo reflects the diversity of its hundreds of ethnic groups and their differing ways of life throughout the country  — from the mouth of the River Congo on the coast, upriver through the rainforest and savanna in its centre, to the more densely populated mountains in the far east. Since the late 19th century, traditional ways of life have undergone changes brought about by colonialism, the struggle for independence, the stagnation of the Mobutu era, and most recently, the First and Second Congo Wars. Despite these pressures, the customs and cultures of the Congo have retained much of their individuality. The country's 81 million inhabitants (2016) are mainly rural. The 30% who live in urban areas have been the most open to Western influences.