Complex sentence: During the Regency Era, from 1811-1830, the most popular dance in England and France was the Quadrille, which consisted of a large variety of steps that skimmed the ground such as chassé and jeté.
Split into simpler sentences: During the Regency Era, from 1811-1830, the Quadrille became the most popular dance in England and France was. The Quadrille consisted of a large variety of steps that skimmed the ground, such as chassé and jeté.