Answer: monistical

AnswerCrossword Clue
monisticalthe conception that there is one causal factor in history; the notion of a single element as primary determinant of behavior, social action, or institutional relations
monisticalof, pertaining to, or involving, monism
monisticala. (in metaphysics) any of various theories holding that there is only one basic substance or principle as the ground of reality, or that reality consists of a single element b. (in epistemology) a theory that the object and datum of cogniti
monisticalthe reduction of all processes, structures, concepts, etc., to a single governing principle; the theoretical explanation of everything in terms of one principle