Last year, canvas shoes were in style. This year, all the fashion magazines are showing leather shoes. What will probably happen to the overall supply of leather shoes over the next year?
The supply will probably go up. The supply will probably go down.
Overall supply is the total amount of a good or service that producers make and sell. There are several things that can make overall supply go up or down. The table below shows how changes to these things might affect overall supply.
 | Resources | Number of producers or suppliers | Expected change in demand
Supply goes up | when resources cost less or are easier to get | when there are more producers or suppliers | when demand is expected to go up
Supply goes down | when resources cost more or are harder to get | when there are fewer producers or suppliers | when demand is expected to go down
Producers are people or companies that make goods or provide services. Suppliers are people or companies that sell goods or services. New inventions or technologies can also help workers produce goods and services more quickly. As a result of these changes, the supply of a good or service will often go up.
Producers know that consumers like to buy goods that are in style. They expect that leather shoes will be in style this year. So, there is an expected change in demand for leather shoes. Producers want to sell as many pairs of leather shoes as they can. So, the supply of leather shoes will probably go up.