Answer :
In a closed economy, the Keynesian-cross analysis's equilibrium condition is that income must equal the total of government spending, investment, and consumption.
Interest rates in the economy are impacted by monetary policy changes. Interest rate changes have an impact on inflation and economic activity. Unexpected inventory investments are bad. When businesses encounter unanticipated inventory accumulation, they typically: cut production and lay off employees keynes. According to the government-purchases multiplier, there will be a change of $1 in government purchases, plus any further changes. When the Fed modifies its monetary policy, the aggregate demand curve may be shifted. The money supply curve moves to the right as the money supply rises. The interest rate decreases in the absence of a shift in the money demand curve. Demand for products and services rises when interest rates decline. According to the Keynesian model, the change in output has no impact on export. Either a change in the income of the rest of the world or a change in the exchange rate has an impact on export. The economy will be in balance when the aggregate expenditure line reaches the 45-degree line. It is the only location along the aggregate expenditure line where total spending on aggregate demand and total production are equal. Interest rates and the amount of money in circulation are inversely related. A bigger money supply results in lower market interest rates, which reduces the cost of borrowing for consumers. In contrast, lower money supply tends to result in higher market interest rates, increasing the cost of borrowing for consumers income.
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