ethnic suffix in -/itanos/ and -/etanos/ (for example, the Sardinian Sulcitanos) have also been noted as Paleo-Sardinian elements (Terracini, Ribezzo, Wagner, Hubschmid and Faust). Some linguists, like Max Leopold Wagner (1931), Blasco Ferrer (2009, 2010) and Arregi (2017) have attempted to revive a theoretical connection with Basque by linking words such as Sardinian idile "marshland" and Basque itil "puddle"; Sardinian ospile "fresh grazing for cattle" and Basque hozpil "cool, fresh"; Sardinian arrotzeri "vagabond" and Basque arrotz "stranger"; Sardinian golostiu and Basque gorosti "holly"; Gallurese (Corso-Sardinian) zerru "pig" (with z for [dz]) and Basque zerri (with z for [s]). Genetic data have found the Basques to be close to the Sardinians. Since the Neolithic period, some degree of variance across the island's regions is also attested. The Arzachena culture, for instance, suggests a link between the northernmost Sardinian region (Gallura) and southern Corsica that finds further confirmation in the Natural History by Pliny the Elder. There are also some stylistic differences across Northern and Southern Nuragic Sardinia, which may indicate the existence of two other tribal groups (Balares and Ilienses) mentioned by the same Roman author. According to the archeologist Giovanni Ugas, these tribes may have in fact played a role in shaping the current regional linguistic differences of the island. Classical period Around the 10th and 9th century BC, Phoenician merchants were known to have made their presence in Sardinia, which acted as a geographical mediator in between the Iberian and the Italian peninsula. In the eighth and seventh centuries, the Phoenicians began to develop permanent settlements, politically arranged as city-states in similar fashion to the Lebanese coastal areas. It did not take long before they started gravitating around the Carthaginian sphere of influence, whose level of prosperity spurred Carthage to send a series of expeditionary forces to the island; although they were initially repelled by the natives, the North African city vigorously pursued a policy of active imperialism and, by the sixth century, managed to establish its political hegemony and military control over South-Western Sardinia. Punic began to be spoken in the area, and many words entered ancient Sardinian as well. Words like giara ‘plateau’ (cf. Hebrew yaʿar ‘forest, scrub’), g(r)uspinu ‘nasturtium’ (from Punic cusmin), curma ‘fringed rue’ (cf. Arabic ḥarmal ‘Syrian rue’), mítza ‘spring’ (cf. Hebrew mitsa, metza ‘source, fountainhead’), síntziri ‘marsh horsetail’ (from Punic zunzur ‘common knotgrass’), tzeúrra ‘sprout’ (from *zerula, diminutive of Punic zeraʿ ‘seed’), tzichirìa