1‘her smile broadened’
widen, become broader, make broader, become wider, make wider, expand, fill out, draw out, spread out, deepen, thicken
2‘the government attempted to broaden its political base’
expand, enlarge, extend, widen, swell
increase, augment, supplement, add to, amplify, fill out
develop, enrich, enhance, intensify, improve, build on, open up
We take a look at several popular, though confusing, punctuation marks.