actually is starts with the consumer
without a demand for something there is not a reason for it to be produced
without production there is no delivery


steps to sales
1.someone sees a need
2. they create something to fulfill it
3. someone else sees it and thinks hey where can i get that
4. step 2 maker usually sells it independently untill large quantity is needed
5. marketing to sotres/consumers
6. demand from comsumer
7. delivery of porduct
8. sale of product
9. more demand
10. more delivery