Margaret Hilda Thatcher, Baroness Thatcher, LG, OM, PC, FRS (October 13, 1925 - April 8, 2013) served as Prime Minister of the United Kingdom from 1979 to 1990 and Leader of the Conservative Party from 1975 to 1990.

"I've got a woman's ability to stick to a job and get on with it when everyone else walks off and leaves it."

She is the only woman to have held either post.

Agnes Campbell Macphail (March 24, 1890 – February 13, 1954) was the first woman to be elected to the Canadian House of Commons, and one of the first two women elected to the Legislative Assembly of Ontario.

Active throughout her life in progressive Canadian politics, Macphail worked for two separate parties and promoted her ideas through column-writing, activist organizing, and legislation.

Susan notes: some sources say these events occured on November 14. The exact date is unimportant really. What is vital is to remember that the rights women have today were hard won by brave women in the past.

This is the story of American women who were ground-breakers in the women's movement. These brave women and others from around the globe made all the difference in the lives we live today.

It's hard to believe that 50 years on, we are still fighting the same old battles.

The public service announcement below, a remix of a 1964 tune by Lesley Gore, creatively and clearly makes the point that women must not become complacent.