Complex sentence: As a Jacobin radical, Desmoulins was not the only one that contributed to these efforts, his close friends Maximilien Robespierre and Georges Danton played significant roles alongside him.
Split into simpler sentences: As a Jacobin radical, Desmoulins was not the only one who contributed to these efforts. His close friends Maximilien Robespierre and Georges Danton played significant roles alongside him.