Query: What period marked the expansion of Greek thinking and expression ?
Context: Under Alexander the Great's empire and successor states, Greek and Hellenizing ruling classes were established in the Middle East, India and in Egypt. The Hellenistic period is characterized by a new wave of Greek colonization that established Greek cities and kingdoms in Asia and Africa. Under the Roman Empire, easier movement of people spread Greeks across the Empire and in the eastern territories, Greek became the lingua franca rather than Latin.