extract the most important phrase from the following text:
NAME_1 was born and christened NAME_2 NAME_1 on 4 July 1807 in Nice, which had been conquered by the French First Republic in 1792, to the Ligurian family of NAME_3 from Chiavari and NAME_4 from Loano.
In 1814, the Congress of Vienna returned Nice to NAME_5 of Sardinia; nevertheless, France re-annexed it in 1860 by the Treaty of Turin, which was ardently opposed by NAME_1. NAME_1's family's involvement in coastal trade drew him to a life at sea. He participated actively in the Nizzardo Italians community and was certified in 1832 as a merchant navy captain.
He lived in Pera district of Constantinople from 1828 to 1832. He became an instructor and taught Italian, French and mathematics.
In April 1833, he travelled to Taganrog, in the Russian Empire, aboard the schooner NAME_6 with a shipment of oranges. During ten days in port, he met NAME_7 from Oneglia, a politically active immigrant and member of the secret Young Italy movement of NAME_8. NAME_9 was a passionate proponent of Italian unification as a liberal republic via political and social reform. NAME_1 joined the society and took an oath dedicating himself to the struggle to liberate and unify his homeland from Austrian dominance.
In November 1833, NAME_1 met NAME_9 in Genoa, starting a long relationship that later became troubled. He joined the NAME_10 revolutionary association, and in February 1