The culture of the Enlightenment, which Russia borrowed, had a number of salient characteristics.
Культура в просвещённость, который Россия заняло, имело число в выстул характерная.
Imperfective aspect since it "borrowed culture" which exists as still of today. I just don't know if "had a number of salient characteristics" which still exists as of today can also be imperfective. (Only an imperfective verb can express a single action as a process, a single action in progress, or an action performed on more than one occassion and completed on each occassion.