What happens to the supply and demand curve in the long run when the government increases spending?

When the government increases spending, it generally boosts aggregate demand, shifting the demand curve to the right. In the long run, this increased demand can lead to higher prices and potentially higher output if the economy is not already at full capacity. If the economy is at full capacity, the increase in demand may primarily result in inflation rather than an increase in real output. Supply curves may also shift over time if government spending leads to increased investment in infrastructure or productivity improvements.