The "world" of which the Buddha speaks is comprised in this aggregate of body-and-mind. For it is only by the activity of our physical and mental sense faculties that a world can be experienced and known at all. The sights, sounds, smells, tastes and bodily impressions which we perceive, and our various mental functions, conscious and unconscious -- this is the world in which we live. And this world of ours has its origin in that very aggregate of physical and mental processes that produces the kammic act of craving for the six physical and mental sense objects.
"If, Ananda, there were no kamma ripening in the sphere of the senses, would there appear any sense-sphere existence?" -- "Surely, not Lord."
-- AN III.76