IWD on March 8 is celebrated by women's groups around the world. This date is also commemorated at the United Nations. When women on all continents, often divided by national boundaries and by ethnic, linguistic, cultural, economic and political differences, come together to celebrate their Day, they can look back to a tradition that represents at least nine decades of struggle for equality, justice, peace and development.
International Women's Day is the story of ordinary women as makers of history; it is rooted in the centuries-old struggle of women to participate in society on an equal footing with men. During the French Revolution, Parisian women calling for "liberty, equality, fraternity" marched on Versailles to demand women's suffrage.
The idea of an International Women's Day first arose at the turn of the century, which in the industrialized world was a period of expansion and turbulence, booming population growth and radical ideologies. (Source http://www.un.org/ecosocdev/geninfo/women/womday97.htm)