"Methamphetamine, also known as pervitin, is a drug <b>with which</b> our society is closely connected."<br/><br/>"Methamphetamine, also known as pervitin, is a drug <b>which</b> our society is closely connected <b>with</b>."<br/><br/>I'd like to ask which of these sentences is correct and why?<br/><br/>Thank you in advance.