Apartheid: Nelson Mandela is jailed. He would not be released until 1990.

Apartheid was a system of institutionalised racial segregation that existed in South Africa and South West Africa from 1948 to the early 1990s. It was characterised by an authoritarian political culture based on baasskap, which ensured that South Africa was dominated politically, socially, and economically by the nation's minority white population. Under this minoritarian system, white citizens held the highest status, followed by Indians, Coloureds and black Africans, in that order. The economic legacy and social effects of apartheid continue to the present day, particularly inequality.

Nelson Rolihlahla Mandela was a South African anti-apartheid activist and politician who served as the first president of South Africa from 1994 to 1999. He was the country's first black head of state and the first elected in a fully representative democratic election. His government focused on dismantling the legacy of apartheid by fostering racial reconciliation. Ideologically an African nationalist and socialist, he served as the president of the African National Congress (ANC) party from 1991 to 1997.

1990 (MCMXC) was a common year starting on Monday of the Gregorian calendar, the 1990th year of the Common Era (CE) and Anno Domini (AD) designations, the 990th year of the 2nd millennium, the 90th year of the 20th century, and the 1st year of the 1990s decade.