Isadora Duncan was an American dancer and choreographer who is considered to be the mother of modern dance. She was a revolutionary figure in the world of dance, and her influence on the development of modern dance is still felt today. Duncan was born in San Francisco in 1877 and began her career as a dancer in the early 1900s. She developed a unique style of movement that was based on natural body movements and emphasized the use of gravity. Her work was highly influential and she is credited with helping to create a new form of dance that was more expressive and less structured than traditional ballet. Duncan died in 1927, but her legacy lives on in the many dancers and choreographers who have been inspired by her work.