Theory That Recognizes Multiple Basic Principles

This page is the CodyCross answer for the clue below from Underground Worlds, Group 2169, Puzzle 1 (Basilica Cistern).

Question is: Theory That Recognizes Multiple Basic Principles

and the answer is: PLURALISM

Word Meaning:

PLURALISM — The quality or state of being plural, or in the plural number.

Definitions from Wiktionary.