On this day:
1796: The first smallpox vaccination is administered by Edward Jenner
1948: Israel becomes an independent state
1955: The Warsaw Pact is established between eight communist bloc countries
1962: Sarvepalli Radhakrishnan elected second President of India
Born on this day:
1984: Mark Zuckerberg, co-founder of Facebook
Gone on this day:
1998: Frank Sinatra, American singer, actor