Jane Addams was the second woman, and first American woman to receive a nobel peace prize. She worked to help the poor and to stop the use of children as industrial laborers. She ran Hull House in Chicago, a center which helped immigrants in particular. She also founded the Women's International League for Peace and Freedom in 1919.
In 1919, Armistice Day was created by President Wilson to remember the end of WWI. Later in 1934, an Act approved on May 13, 1938, made the 11th of November in each year a legal holiday—a day dedicated to the cause of world peace. After WWII, in 1954, Armistice was replaced with Veteran, to honor those who had served.