निम्नलिखित में से कौन सा नैतिक सिद्धांत या अभ्यास बौद्ध धर्म और जैन धर्म दोनों में समान रूप से प्रबल रूप से वर्णित है?

Gautama Buddha was born at ______.

Consider the following statements regarding a historical period: (i) Animals began to be used for transporting goods during this period. (ii) Trade and transportation developed significantly in this era. (iii) Pottery making using the potter's wheel started in this age. Which historical period is described by the above statements?