Complex sentence: American Style Rumba is characterized by the Cuban motion or hip sway arising from the bending and straightening of the knee, as opposed to Latin motion stepping on a straight leg, which is used in International Style Rumba.
Split into simpler sentences: American Style Rumba is characterized by the Cuban motion or hip sway. Arising from a knee being bent, as opposed to Latin Motion stepping on a straight leg, which is used in International Style Rumba.