Soon after Mandela moved to Johannesburg ...

   he got a job as a policeman.
   he joined the African National Congress.
   he opened a law firm.

Why was he given "life imprisonment"?

   Revolution against government.
   A student strike.
   Opposing his college's policy.

When did he become a President?

   On February 9, 1990.
   In 1993.
   In 1994.