Complex sentence: After Napoleon's defeat in 1815, the monarchy was re-established in France, but the discredited Bourbon Dynasty was overthrown in the July Revolution of 1830, which established the constitutional July Monarchy, which lasted until 1848.
Split into simpler sentences: After Napoleon's defeat, the monarchy was re-established in France and lasted from 1815 to 1830. However the discredited Bourbon Dynasty was overthrown by the July Revolution of 1830, which established the constitutional July Monarchy, which lasted until 1848.