Rudolf von Laban developed a system of dance notation called Labanotation, which is widely used today to record and analyze dance movements.

Margaret H'Doubler developed the concept of "kinetic empathy", which refers to the ability to understand and appreciate the movement of others.

Ruth St. Denis founded the Denishawn School of Dancing and Related Arts in 1915, which became a major center for the development of modern dance.

Hanya Holm was a dancer and choreographer who conducted extensive research on the relationship between dance and music.

Martha Graham is widely regarded as the mother of American modern dance due to her innovative choreographic style and her influence on generations of dancers.

Mary Wigman developed the concept of "space-harmony", which refers to the relationship between the dancer's body and the surrounding space.

Hanya Holm founded the Hanya Holm Studio in New York City in 1931, which became a renowned center for modern dance training.

Rudolf von Laban developed the concept of "effort", which refers to the way in which a dancer uses their body to create movement.

Martha Graham founded the Martha Graham Center of Contemporary Dance in New York City in 1936, which became a major center for modern dance training and performance.

Hanya Holm developed the concept of "shape", which refers to the overall form and structure of a dance movement.

Merce Cunningham founded the Merce Cunningham Dance Company in New York City in 1953, which became a major center for contemporary dance.

Merce Cunningham developed the concept of "time", which refers to the way in which a dancer uses rhythm and tempo to create movement.

Alvin Ailey founded the Alvin Ailey American Dance Theater in New York City in 1958, which became a major center for contemporary dance.

William Forsythe developed the concept of "flow", which refers to the way in which a dancer moves through space in a continuous and fluid manner.

William Forsythe founded the Forsythe Company in Frankfurt, Germany in 1994, which became a major center for contemporary dance.