Summary:
People around the world are paying tribute to the woman who many consider the greatest prime minister of all time.

Full article:
London (CNN) -- Former British Prime Minister Margaret Thatcher, who died Monday at the age of 87, helped to shape the course of 20th century history -- but not everyone believes the Iron Lady changed things for the better. People around the globe took to Twitter following the announcement of Thatcher's death to offer tributes, and debate her legacy for Britain and for the world. .