In 1952, Puerto Rico became a selfgoverning U.S. commonwealth.
In 1978, Louise Joy Brown, the first baby to be born after being conceived via in vitro fertilization, was delivered in Greater Manchester, England.
In 2005, two major unions, the Teamsters and the Service Employees International Union, withdrew from the AFL-CIO.
In 2010, the website WikiLeaks released the “Afghan War Diary,” containing m…