Africa is the only continent crossed by the Equator, the Prime Meridian, and the Tropic of Capricorn.
The Equator crosses central Africa, passing through countries including Gabon, the Republic of the Congo, the Democratic Republic of the Congo, Uganda, Kenya, and Somalia. The Prime Meridian crosses western Africa, including Ghana, Togo, Burkina Faso, and Algeria. The Tropic of Capricorn crosses southern Africa, including Namibia, Botswana, South Africa, Mozambique, and Madagascar.
This combination gives Africa territory in all four hemispheres: northern, southern, eastern, and western. The continent extends roughly from the Mediterranean coast in the north to the southern tip of South Africa, and from the Atlantic Ocean to the Indian Ocean.
South America is crossed by the Equator and the Tropic of Capricorn, but the Prime Meridian does not pass through it. Asia is crossed by the Equator and the Prime Meridian, but not the Tropic of Capricorn. Australia is crossed by the Tropic of Capricorn, but neither the Equator nor the Prime Meridian crosses its mainland.