Pater Patriae in the context of "Victor Emmanuel II"

The constitutional reforms of Augustus were a series of laws that were enacted by the Roman Emperor Augustus between 30 BC and 2 BC, which transformed the Constitution of the Roman Republic into the Constitution of the Roman Empire. The era during which these changes were made began when Augustus defeated Mark Antony and Cleopatra at the Battle of Actium in 31 BC, and ended when the Roman Senate granted Augustus the title "Pater Patriae" in 2 BC.

The Unification of Italy (Italian: Unità d'Italia [uniˈta ddiˈtaːlja]), also known as the Risorgimento (Italian: [risordʒiˈmento]; lit. 'Resurgence'), was the 19th century political and social movement that in 1861 ended in the annexation of various states of the Italian peninsula and its outlying isles to the Kingdom of Sardinia, resulting in the creation of the Kingdom of Italy. Inspired by the rebellions in the 1820s and 1830s against the outcome of the Congress of Vienna, the unification process was precipitated by the Revolutions of 1848, and reached completion in 1870 after the capture of Rome and its designation as the capital of the Kingdom of Italy.

Individuals who played a major part in the struggle for unification and liberation from foreign domination included King Victor Emmanuel II; politician, economist and statesman Camillo Benso, Count of Cavour; general Giuseppe Garibaldi; and journalist and politician Giuseppe Mazzini. Borrowing from the old Latin title Pater Patriae of the Roman emperors, the Italians gave to King Victor Emmanuel II the epithet of Father of the Fatherland (Italian: Padre della Patria). Even after 1870, many ethnic Italian-speakers (Italians in Trentino-Alto Adige/Südtirol, Savoyard Italians, Corfiot Italians, Niçard Italians, Swiss Italians, Corsican Italians, Maltese Italians, Istrian Italians, and Dalmatian Italians) remained outside the borders of the Kingdom of Italy, planting the seeds of Italian irredentism.

The Expedition of the Thousand (Italian: Spedizione dei Mille) was an event of the unification of Italy that took place in 1860. A corps of volunteers led by Giuseppe Garibaldi sailed from Quarto al Mare near Genoa and landed in Marsala, Sicily, in order to conquer the Kingdom of the Two Sicilies, ruled by the Spanish House of Bourbon-Two Sicilies. The name of the expedition derives from the initial number of participants, which was around 1,000 people.

The Garibaldians, with the contribution of southern volunteers and reinforcements to the expedition, increased in number, creating the Southern Army. After a campaign of a few months with some victorious battles against the Bourbon army, the Thousand and the newborn southern army managed to conquer the entire Kingdom of the Two Sicilies. The expedition was a success and concluded with a plebiscite that brought Naples and Sicily into the Kingdom of Piedmont-Sardinia, the last territorial conquest before the proclamation of the Kingdom of Italy on 17 March 1861. The Expedition of the Thousand was the only desired action that was jointly decided by the four "Fathers of the Fatherland": Giuseppe Mazzini, Giuseppe Garibaldi, King Victor Emmanuel II, and Camillo Benso, Count of Cavour, pursuing divergent goals. Mazzini, of republican political belief, wanted to liberate Southern Italy and Rome, while Garibaldi wanted to conquer, in the name of Victor Emmanuel II, the Kingdom of the Two Sicilies and continue towards Rome to complete the Italian unification, while Cavour wanted to prevent the conquest of Rome to avoid a conflict with his French ally, Napoleon III, who protected the Papal States.

Giuseppe Maria Garibaldi (/ˌɡærɪˈbɑːldi/ GARR-ib-AHL-dee, Italian: [dʒuˈzɛppe ɡariˈbaldi] ; 4 July 1807 – 2 June 1882) was an Italian general, revolutionary and republican. He contributed to the Unification of Italy (Risorgimento) and the creation of the Kingdom of Italy. He is considered to be one of Italy's "fathers of the fatherland", along with Camillo Benso di Cavour, King Victor Emmanuel II and Giuseppe Mazzini. Garibaldi is also known as the "Hero of the Two Worlds" because of his military enterprises in South America and Europe.

Garibaldi was a follower of the Italian nationalist Mazzini and embraced the republican nationalism of the Young Italy movement. He became a supporter of Italian unification under a democratic republican government. However, breaking with Mazzini, he pragmatically allied himself with the monarchist Cavour and Kingdom of Sardinia in the struggle for independence, subordinating his republican ideals to his nationalist ones until Italy was unified. After participating in an uprising in Piedmont, he was sentenced to death, but escaped and sailed to South America, where he spent 14 years in exile, during which he took part in several wars and learned the art of guerrilla warfare. In 1835 he joined the rebels known as the Ragamuffins (farrapos), in the Ragamuffin War in Brazil, and took up their cause of establishing the Riograndense Republic and later the Catarinense Republic. Garibaldi also became involved in the Uruguayan Civil War, raising an Italian force known as Redshirts, and is still celebrated as an important contributor to Uruguay's reconstitution.

The Father of the Nation is an honorific title given to a person considered the driving force behind the establishment of a country, state, or nation. Pater Patriae was a Roman honorific meaning the "Father of the Fatherland", bestowed by the Senate on heroes, and later on emperors. In monarchies, the monarch is often considered the "father/mother of the nation" or as a patriarch to guide his family. This concept is expressed in the divine right of kings espoused in some monarchies, while in others it is codified into constitutional law.

In the United States, George Washington, commander of the Continental Army during the American Revolutionary War, president of the Constitutional Convention, and the first president of the United States, is commonly considered the Father of the Nation. In Spain, the monarch is considered the personification and embodiment, the symbol of unity and permanence of the nation. In Thailand, the monarch is given the same recognition, and any person who expresses disrespect toward the reigning monarch faces severe criminal penalties.