Koine Greek was a common dialect of Greek that emerged during the Hellenistic period (323-146 BC). It was the language of commerce, administration, and culture throughout the vast territories ruled by the Roman Empire.
Here's why Koine Greek was the lingua franca:
* The Roman Empire: The Roman Empire spread Greek across its territories through administration, military campaigns, and trade.
* Common Language: Koine Greek was a simplified and standardized form of Greek that was easier to learn and understand than other dialects.
* Education and Literature: Greek was the language of education and literature, which contributed to its widespread use.
* Trade and Commerce: Koine Greek facilitated trade and commerce across the Roman Empire.
* Cultural Influence: Greek culture had a strong influence on the region, making Koine Greek a language of prestige.
While Latin was also spoken in the Roman Empire, it was primarily used in the western part, while Koine Greek dominated the eastern regions.