The causes which led Nadir to invade India have been already stated; nor were they groundless. The court of Delhi had certainly not observed the established ties of friendship. It had given shelter to the Afghans who fled from the sword of the conqueror; and this protection was likely to enable them to make another effort to regain their lost possessions, and consequently to reinvolve Persia in war. The ambassadors of Nadir, who had been sent to make remonstrances on this subject, had not only been refused an answer, but were prevented from returning, in defiance of the reiterated and impatient applications of that monarch. This proceeding, we are told, originated more in irresolution and indecision than from a spirit of hostility; but it undoubtedly furnished a fair and justifiable pretext for Nadir's advance. Regarding the other motives which induced him to undertake this enterprise, we can conjecture none but an insatiable desire of plunder, a wish to exercise that military spirit he had kindled in the Persians, or the ambitious view of annexing the vast dominions of the sovereign of Delhi to the crown of Persia. But if he ever cherished this latter project he must have been led by a near view of the condition of the empire of India, to reject it as wholly impracticable. We are, however, compelled to respect the greatness of that mind which could resolve, at the very moment of its achievement, upon the entire abandonment of so great a conquest; for he did not even try to establish a personal interest at the court of Delhi, except through the operation of those sentiments which his generous conduct in replacing him upon his throne might make upon the mind of Mahomet Shah.