Quickstep and Foxtrot have a common origin. In the twenties many bands played the Slow-Foxtrot too fast, which gave rise to many complaints. Eventually they developed into 2 different dances.
Slow Foxtrot tempo has been slowed down and Quickstep became clearly the fast version of Foxtrot. The Charleston had a lot of influence on the development of Quickstep. Dancing a Quickstep demands a lot of stamina and it is comparable with running 400m on the athletic track.
Slow Foxtrot - often associated with the style of Fred Astaire and Ginger Rogers. The dance was introduced in 1913 by Harry Fox, a musical dancer. The great fascination of Foxtrot is the amazing variety of interpretations we see today of what is basically such a simple dance. The combination of quick and fast steps allows more flexibility and gives great dancing pleasure. In some ways, Foxtrot is the hardest dance to learn.