Italian was not the official language of the Roman Empire and therefore is not a legacy, so this would be the incorrect answer. During the Pax Romana, there were many key inventions such as the systems of roads, tunnels and bridges being created all over the empire. Aqueducts were one of the biggest inventions, with some of them still working today. The achievements made in law during that time are still used for Civil Law today.
Cuba was a closely Soviet controlled communist country close to the United States Fun fact a soviet nuclear submarine incorrectly received orders and thought that war had begun between the US and the Soviet Union the two senior officers both have the go ahead to launch but the junior officer Vasili Alexandrovich Arkhipov did not give the go ahead pretty much preventing all out nuclear war