Complex sentence: An articulate, albeit eccentric propagandist, Gordon inflamed the mob with fears of papism and a return to absolute monarchical rule, intimating that Catholics in the military would, given a chance, join forces with their co-religionists on the Continent, and attack Britain.
Split into simpler sentences: An articulate, albeit eccentric propagandist, Gordon inflamed the mob with fears of papism and a return to absolute monarchical rule. He intimated Catholics in the military would, given a chance, join forces with their co-religionists on the Continent, and attack Britain.