Why is the supply curve upward sloping?

The supply curve is upward sloping because it reflects the fact that producers are generally willing to supply more of a good when the price increases. This is because higher prices offer greater incentives for firms to produce, as their potential profits will be higher. Additionally, producers can benefit from economies of scale, so that their costs may decrease as their production increases. As a result, producers are typically willing to produce more of a good when the price increases, which creates an upward-sloping supply curve.