History · 18th Century India & Mughal Decline

Consider the following statements regarding the political developments and stability of the North-West Frontier during the early eighteenth century: 1. The Ghilzai uprisings in Qandahar in 1709 severely affected the overland trade networks connecting the Indian subcontinent with Persia. 2. The Safavid dynasty in Persia effectively came to an end following the capture of Isfahan by Mahmud Ghilzai in 1722. 3. To prevent the collapse of their frontier authority, the Mughal court aggressively confronted the new external threats and initiated military action against Mahmud Ghilzai. 4. Nadir Shah filled the regional political vacuum by expelling the Ottoman forces and checking the advances of the Ghilzai Afghans. Which of the statements given above are correct?