Describe in 100 words or less why Martha Graham is considered the mother of modern dance?

The fundamental principles of Martha Graham's technique for choreography are based onthe contraction and liberation of the body, a technique that was developed as a stylized representation of the breath and, depending on the context, symbolized the dancer's surrender to the emotions. the displacement of the body, considering the fall and the recovery, manipulating the body's center of gravity to control the moment and direction of a fall. the spirals, which consist of rotating the spine about 45° around its vertical axis, so that a dancer facing the front of the stage aligns his shoulders with the "Via Triumphalis"