Martha Graham was an influential American dancer and choreographer, born on May 11, 1894, in Allegheny, Pennsylvania. She is often regarded as one of the pioneers of modern dance, known for her innovative techniques and expressive style. Graham developed a unique movement language that emphasized the connection between emotion and physical expression. Throughout her career, Graham founded the Martha Graham Dance Company in 1926, which became a leading force in modern dance. She created numerous iconic works, including "Appalachian Spring" and "Cave of the Heart," which explored themes of human experience and emotion. Graham's contributions have left a lasting impact on the world of dance.