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