कुरनूल गुफाएं, जो एक महत्वपूर्ण उच्च पुरापाषाणकालीन और मध्यपाषाणकालीन पुरातात्विक स्थल के रूप में प्रसिद्ध हैं, वर्तमान समय के किस भारतीय राज्य में स्थित हैं?

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?