Find correct sequence of sentences :
1: Politeness is not a quality possessed by only one nation or race.
P: One may observe that a man of one nation will remove his hat or fold his hands by way of greetings when he meets someone he knows.
Q: A man of another country will not to do so.
R: It is a quality to be found among all peoples and nations in every corner of the earth.
S: Obviously, each person follows the custom of his particular country.
6: In any case, we should not mock at others habits.