The Greco-Roman world, Greco-Roman culture, or the term Greco-Roman (/ˌɡrɛkoʊˈroʊmən/ or /ˌɡrɛkəˈroʊmən/; spelled Graeco-Roman in the United Kingdom and the Commonwealth), when used as an adjective, as understood by modern scholars and writers, refers to those geographical regions and countries that culturally (and so historically) were directly, long-term, and intimately influenced by the language, culture, government and religion of the ancient Greeks and Romans. In exact terms the area refers to the "Mediterranean world", the extensive tracts of land centered on the Mediterranean and Black Sea basins, the "swimming-pool and spa" of the Greeks and Romans, i.e. one wherein the cultural perceptions, ideas and sensitivities of these peoples were dominant.
As mentioned, the term Greco-Roman world describes those regions who were for many generations subjected to the government of the Greeks and then the Romans and thus accepted or at length were forced to embrace them as their masters and teachers. This process was aided by the seemingly universal adoption of Greek as the language of intellectual culture and at least Eastern commerce, and of Latin as the tongue for public management and forensic advocacy, especially in the West (from the perspective of the Mediterranean Sea).