Nelson Mandela

Time line: 

1918 - was born in a small African village, Transkei
1942 - was qualified in law (University College of Fort Hare and the University of Witwatersrand)
1944 - joined the African National Congress
1948 - was against the ruling National Party's apartheid policies
1956 - the Government arrested him and 150 other activists, and charged them. He went on trial for treason for 4 years
1961 - was acquitted
1962 - was arrested and sentenced to 5 years prison
1964 - was sentenced to life prison
1990 - was released
1991 - was elected as a President of the ANC
1994 - was elected as a President of South Africa

Achievements:

Nelson Mandela was an anti-apartheid activist and the leader of Umkhonto we Sizwe. He was arrested and convicted of sabotage and other charges, and sentenced to life in prison, but was released and became a President of the ANC. Then he was the first South African president to be elected in a democratic election.