This design features the national flag of South Africa (officially the Republic of South Africa), which is the southernmost country in Africa. About 80% of South Africans are of Black African ancestry, while the remaining population consists of large communities of European, Asian and multiracial ancestry. South Africa has three capital cities: executive Pretoria, judicial Bloemfontein and legislative Cape Town. The most populous city is Johannesburg; other major cities are Durban, East London, Pietermaritzburg, Port Elizabeth, Soshanguve and Vereeniging. South Africa is often referred to as the "rainbow nation" to describe the country's multicultural diversity, especially in the wake of apartheid.