Modern ballroom dance is a form of social dance that originated in the late 19th and early 20th centuries. Two of the most popular modern ballroom dances are the TANGO and the Quickstep. The TANGO is a passionate, romantic dance that originated in Argentina and Uruguay. It is characterized by its dramatic pauses and intricate footwork. The Quickstep is a fast-paced dance that originated in the 1920s. It is known for its quick steps, hops, and runs. Both dances require skill and practice to master.