If a country's income levels increase significantly, how should this be represented on the aggregate demand and supply graph for its trading partner?

When a country's income levels increase significantly, it means that people in that country have more money to spend. This additional income usually leads to an increase in demand for goods and services, including those from trading partners. On an aggregate demand and supply graph, this can be shown by shifting the aggregate demand curve to the right, indicating that more goods are being demanded at every price level. For example, if Country A's income rises, it might buy more cars from Country B, leading to higher demand for cars. As a result, Country B may see an increase in production and possibly higher prices due to the increased demand.