Why does Hume claim that the virtues of Benevolence and Justice are nearly universal moral principles in communities worldwide?

Make two separate postings in the Discussion Forum. Your posts should address the following issues:

1)Why does Hume claim that the virtues of Benevolence and Justice are nearly universal moral principles in communities worldwide?
2)According to Nietzsche, what is the difference between “slave morality” and “master morality”?