There is a location/clima reason. Cocoa grows (well) only in a certain part of the world around the equator line as it requires tropical weather with regular ra

There is a location/clima reason. Cocoa grows (well) only in a certain part of the world around the equator line as it requires tropical weather with regular rains and small dry seasons. It may be possible to use artificial techniques to grow it elsewhere, but I'm assuming it's not economically viable or you get a product with worst quality in the end