As Prime Minister, he sought to modernize Romania and strengthen Western alliances but faced severe opposition from the Iron Guard, a revolutionary fascist movement.

[3] Upon returning to Romania, Duca joined the National Liberal Party, aligning with its agenda for modernisation, economic reform, and closer ties with Western Europe.

With a sharp intellect and articulate style, he quickly gained recognition within the party and secured early political appointments, advocating for reforms in education and foreign policy.

[6] In an effort to curb the influence of the Iron Guard, Duca had dissolved the organization and held elections in December, where the Liberals won with a decisive 51% of the vote, partly due to peasant support shifting away from their traditional party.

[1] Duca left a significant legacy in Romanian history, not only for his contributions to politics but also through his detailed memoirs documenting his experiences as a cabinet minister during World War I.

In recognition of his influence, streets have been named in Duca’s honor in several Romanian cities, including Bucharest, Constanța, Craiova, Eforie, Mediaș, and Otopeni.