Complex sentence: In the Kingdom of Sicily a peerage was instituted in 1812 in connection with the abolition of feudalism: peers were nominated based on the taxable incomes of their formerly-feudal estates.
Split into simpler sentences: In the Kingdom of Sicily a peerage was instituted in 1812 in connection with the abolition of feudalism. Peers were nominated based on the taxable incomes of their formerly-feudal estates.