41. Olivelle states Prashna Upanishad " cannot be much older than the beginning of the common era ". 42. These discoveries, inventions and modifications are evidence of the evolution of biotechnology since before the common era . 43. These charts may have been in use by the beginning of the Common Era for purposes of navigation. 44. This translation work took place over the course of the 5th through 10th centuries of the common era . 45. Davidow says that " by about the year 200 of the Common Era , Hanukkah had already become popular. 46. The foundational texts of Manusmriti include many of these sutras, all from an era preceding the common era . 47. By the beginning of the Common Era glass was being used for ornaments and casing in the region. 48. Roman coins dating from the early centuries of the common era have been found near the Kaveri delta. 49. Scholars generally agree that this literature belongs to the second or first few centuries of the common era . 50. The earliest textual evidence of the Mahayana comes from sutras originating around the beginning of the common era .
