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 . .
Britain 's former Prime Minister Margaret Thatcher died in London Monday at the age of 87 . Thatcher 's supporters and supporters were quick to share their reactions to the news on Twitter .