Complex sentence: Differences in approaches to religion eventually came to the fore with the rise in power and influence of an Independents faction in the English Parliament, in particular its dominance of the New Model Army which alarmed the still Presbyterian-dominated Scottish Parliament.
Split into simpler sentences: Differences in approaches to religion eventually came to the fore with the rise in power and influence of an Independents faction in the English Parliament. In particular, its dominance of the New Model Army alarmed the still Presbyterian-dominated Scottish Parliament.