The pre-colonial history of the modern-day Democratic Republic of the Congo encompasses the history of the Congo Basin region up to the establishment of European colonial rule in the era of New Imperialism and particularly the creation of the Congo Free State and its expansion into the interior after 1885. As the modern territorial boundaries of the Democratic Republic of the Congo did not exist in this period, it is inseparable from the wider pre-colonial histories of Central Africa, the Great Lakes and Rift Valley as well as the Atlantic World and Swahili coast.