Complex sentence: By 1823 it was larger than Plymouth and the residents resented the fact that its name made it sound like an adjunct of the smaller town, so they petitioned King George IV asking that it be renamed.
Split into simpler sentences: By 1823 it was larger than Plymouth and the residents resented the fact that its name made it sound like an adjunct of the smaller town. They petitioned King George IV asking that it be renamed.