Complex sentence: A prominent city centre monument honouring an Englishman rankled increasingly as nationalist sentiment grew, and throughout the 19th century there were calls for it to be removed, or replaced with a memorial to an Irish hero.
Split into simpler sentences: A prominent city centre monument honouring an Englishman rankled as nationalist sentiment grew. Throughout the 19th century there were calls for it to be removed, or replaced with a memorial to an Irish hero.