This is just a guess but I think it is desalinate
Http://quizlet.com/15406139/apush-war-of-1812-and-era-of-good-feelings-vocab-flash-cards/
This website is great for it.
The idea of supply and demand is based on the development of sufficient products to meet consumer wants if the company itself created the product that has an increase in demands from the consumer, they must create more to meet the demands increasing their supplies.
One difference is the size: canals are big enough to travel through them, while irrigation systems can be very small
Another one is function: canals have the function of enabling transport, while irrigation system that of bringing water to an agricultural field.
