Tango is a partner dance and social dance that originated in the 1880s along the Río de la Plata, the natural border between Argentina and Uruguay. The tango was born in the impoverished port areas of these countries from a combination of Argentine Milonga, Spanish-Cuban Habanera, and Uruguayan Candombe celebrations. It was frequently practiced in the brothels and bars of ports, where business owners employed bands to entertain their patrons. It then spread to the rest of the world. Many variations of this dance currently exist around the world.

Partner dances are dances whose basic choreography involves coordinated dancing of two partners, as opposed to individuals dancing alone or individually in a non-coordinated manner, and as opposed to groups of people dancing simultaneously in a coordinated manner.