Complex sentence: Duckburg remained a quiet, small town until the arrival of wealthy businessman Scrooge McDuck, who proceeded to construct his famous money bin and established various businesses in and around Duckburg.
Split into simpler sentences: Duckburg remained a quiet, small town until the arrival of wealthy businessman Scrooge McDuck. Scrooge proceeded to construct his famous money bin and established various businesses in and around Duckburg.