Complex sentence: Huguenots were French Protestants who were inspired by the writings of John Calvin and endorsed the Reformed tradition of Protestantism, contrary to the largely German Lutheran population of Alsace, Moselle, and Montbéliard.
Split into simpler sentences: Huguenots were French Protestants who were inspired by the writings of John Calvin. Huguenots and endorsed the Reformed tradition of Protestantism, contrary to the largely German Lutheran population of Alsace, Moselle, and Montbéliard.