Answer:
APARTHEID -- SOUTH AFRICA
Step-by-step explanation:
Apartheid was a system of racial segregation that existed in South Africa and South West Africa from 1948 to 1990s. During this time several internal resistance groups developed in the South African society.
Nelson Mandela was one of several activists that were anti-colonial and defended African Nationalist politics. Because of that, he joined the ANC (African Congress), he was involved in the Defiance Campaign and got arrested several times for seditious activities. He was sentenced to life imprisonment for conspiring to overthrow the state, he served for 27 years and was released in 1990.