Everything.
It helps the producer to know the type of goods to produce when goods of the same substitute exist.
complex
market.
market.
Yes, China did produce goods.
they let the customers and citizens decide.
What Austria's produce for Christmas in 1937 was the hit speical "If i could find a igloo".
reseller
A food tax or a produce tax
Usually by trucks...
It is the demand and supply which determines the goods and services to produce in the economy.