Does 'As the Tokugawa shoguns had feared, this opening of the floodgates of Western culture after such prolonged isolation had a traumatic effect on Japanese society.' stand independently of the premise 'There was no traumatic effect on japanese society, when the floodgates of Western culture opened.', neither following nor contradicting it?
As the Tokugawa shoguns had feared, this opening of the floodgates of Western culture after such prolonged isolation had a traumatic effect on Japanese society.###There was no traumatic effect on japanese society, when the floodgates of Western culture opened.