Today in history: On Dec. 5, 2013, Nelson Mandela, the anti-apartheid leader who became South Africa’s first Black president, died at age 95. Also on this date: In 1848, in an address to Congress, President James K. Polk sparked the Gold Rush of ’49 by confirming that gold had been discovered in California. In 1933, national Prohibition came to an end as Utah became the 36th state to ratify the 21st Amendment to the Constitution, repealing the 18th Amendment. In 1952, the Great Smog of London