Short answers, pulled from the story.
Colchis occupied the eastern coast of the Black Sea stretching from the river Corax in the west to the Greater Caucasus mountains in the north. The southern boundary touched the Lesser Caucasus range and the Armenian highlands while a central plain lay between Sukhumi and Kobuleti below sea level.
A well-developed culture emerged toward the Middle Bronze Age in this eastern Black Sea region with urbanization advancing by the end of the second millennium BC. Skilled smelting and casting of metals developed during the Late Bronze Age period spanning the fifteenth to eighth century BC.
Chief among the tribes living along the shore were the Machelones, Heniochi, Zydretae, and Lazi alongside other groups including Chalybes, Tibareni, Mossynoeci, Macrones, Moschi, Marres, Apsilae, Abasci, Sanigae, Coraxi, Coli, Melanchlaeni, Geloni, and Soani. Modern historians widely reject Herodotus claims that these people had Egyptian origins despite his descriptions of their dark skin and woolly hair.
Both Pontus and Colchis were incorporated into the Province of Galatia in 63 AD later moving to Cappadocia in 81 AD. Roman garrison forces stationed at Pitsunda helped repel Gothic raids in 253 AD despite loose imperial control over fortresses along the sea coast.
Timber and iron resources flowed out to ancient Hellenic city-states as part of broader Mediterranean exchange networks while salt demand was satisfied partially by local coastal production and imports from the northern Black Sea coast. Wetlands housed waterfowl whose pheasants became exported symbols of excess condemned by Roman moralists.