money plant epipremnum aureum

How did this plant spread?
With the cuts? leaves, roots, stem, or what? "http://en.wikipedia.org/wiki/Epipremnum_aureum Epipremnum aureum, also known as Pothos, Silver Vine, Money Plant, Centipede and Ivy tongavine Devil "in my country we call Juliet, but does not as a name in this article
Houseplant easiest to grow, I have 4 of them, each of which are propagated from the original, which is 20 years. Simply cut a piece that has multiple nodes, put it in water until it begins to the root and then plant in a well. Do not water very often, maybe once a month.