This document discusses how government spending and taxation impact aggregate demand. It explains that aggregate demand is made up of consumption, investment, government spending, and net exports. The document then outlines different types of government spending and taxation, and how fiscal policy tools like cutting taxes or raising spending can be used to stimulate aggregate demand and reduce unemployment by shifting the aggregate demand curve to the right. However, this may lead to inflation. The document also discusses using expenditure-reducing or expenditure-switching fiscal policies to impact trade balances and imports.