The Democratic Republic of the Congo (DRC), or simply either Congo or the Congo, is a country in Central Africa. It is, by area, the largest country in sub-Saharan Africa, and the 11th-largest in the world. With a population of around 103 million, DRC is the most-populous officially Francophone country in the world. The country is located in central sub-Saharan Africa, bordered to the northwest by the Republic of the Congo, to the north by the Central African Republic, to the northeast by South Sudan, to the east by Uganda, Rwanda and Burundi, and by Tanzania, to the south and southeast by Zambia, to the southwest by Angola, and to the west by the South Atlantic Ocean and the Cabinda Province exclave of Angola. The size of Congo, 2,345,408 square kilometres (905,567 sq mi), is slightly greater than the combined areas of Spain, France, Germany, Sweden, and Norway. It is the second-largest country in Africa by area, after Algeria.
The DRC sustains the Congo Rainforest, the second-largest rain forest in the world after the Amazon. This massive expanse of lush jungle covers most of the vast, low-lying central basin of the river, which slopes toward the Atlantic Ocean in the west. This area is surrounded by plateaus merging into savannas in the south and southwest, by mountainous terraces in the west, and dense grasslands extending beyond the Congo River in the north.