1) Diverse 2) Doctrine 3) Philosophical system 4) Philosophy 5) School of thought 
Including people from different cultural and ethnic groups.strongly influenced by or having prominent characteristics of several cultural groups or peoples
[adj] - of or relating to or including several cultures
multicultural Relating to, consisting of, or participating in the cultures of different countries, ethnic groups, or religions.
Multicultural means pertaining to more than one culture.
adjective of or relating to or including several cultures; `a multicultural event`
of, pertaining to, or representing several different cultures or cultural elements: a multicultural society.
relating to or including diverse nationalities or customs