Ancient Chinese written documents record that by the second century a.d., a vast trade network had already been established connecting peoples and goods from the Mediterranean, the Near East, India, and Asia. This has been confirmed by archaeological excavations throughout Southeast Asia, which have uncovered various items such as Indian jewelry, Roman glass, and Persian pottery. According to a Science News Today report, however, a comprehensive new study has revealed that silver coinage may be the key to truly understanding just how interconnected these distant regions actually were. Found at many archaeological sites across this region, the coins feature a...