1918 Nelson born
in Transkei, South Africa
1942 completed his
university in law
1944 joined the
African National Congress(ANC)
1948 resistanted
the ruling National Party's apartheid policies
1961 acquitted of
treasonable trial
1962 arrested and sentenced
to five years' imprisonment
1964 sentenced to
life imprisonment for plotting to overthrow the government by violence
1990 released
after 26 years’ imprisonment
1991 elected
President of ANC
