The correct options are
A During the ancient period, the Italian Peninsula had seen the rise and fall of the glorious Roman Civilisation.
B In the early 19th century, Italian peninsula comprised the states of Piedmont, Lombardi, Venetia, Tuscany, Parma, Modena, Papal state and the Kingdom of the Two Sicilies.
C The emergence of Italian Nationalism led to the Italian integration.
During the ancient period, the Italian Peninsula had seen the rise and fall of the glorious Roman civilization. The Italian Peninsula spoke one language and believed in one religion, Roman Catholicism.
In the early 19th century, Italian peninsula comprised the states of Piedmont, Lombardi, Venetia, Tuscany, Parma, Modena, Papal state or the Pope’s state and the Kingdom of the Two Sicilies. The Piedmont state included Sardinia, Piedmont and Genoa and the Kingdom of Two Sicilies included Sicily and Naples.
Several revolts broke out between 1815 and 1848 calling for national integration and national freedom. The idea was then propounded by a lawyer, Giuseppe Mazzini.
Victor Emmanuel II became the first king of Italy.