Complex sentence: The majority of lower classes of the eighteenth century were not disloyal to the king or government, and not enfranchised, as the he working class never tried to alter the constitution, and never openly desired a change in the form of administration.
Split into simpler sentences: The majority of lower classes were not disloyal to the king or government, and not enfranchised. The working class of the eighteenth century never tried to alter the constitution, and never openly desired a change in the form of administration.