Question

Creation stories describe creation resulting from the forming or the breaking of a union between two powerful, primordial forces.

Answer 1

world parents

Answer 2

This indeed is true, creation stories often involve two major life forces which in an intertwined fashion bring upon the creation of life and all that ther is. They are often considered to be powerful and primordial, similary to how your question describes it. Sigmund Freud even considered them to be the two motivating forces in life.