Modern dance is a dance form developed in the early 20th century.
Although the term Modern dance has also been applied to a category of 20th Century ballroom dances, Modern dance as a term usually refers to 20th century concert dance.
In the early 1900s European and American dancers started to rebel against the rigid constraints of Classical Ballet.
Shedding the authoritarian controls surrounding classical ballet technique, costume, and shoes, these early modern dance pioneers focused on creative self-expression rather than on technical virtuosity.
Modern dance is a more relaxed, free style of dance in which choreographers use emotions and moods to design their own steps, in contrast to ballet's structured code of steps.
It has a deliberate use of gravity, whereas ballet is rigid in its technique. Classical ballet is the basic building blocks for all dance types and thus modern dance also uses technique.