Final answer:
Prussia's aggregate demand increased from AD = 4% to AD = 7% from 2013 to 2014, represented by a rightward shift in the AD curve on a graph. Factors contributing to this shift can include increased consumption, investment, government spending, or net exports.
Step-by-step explanation:
The question is centered around the analysis of Prussia's aggregate demand curves for two consecutive years, demonstrating a shift in aggregate demand. The initial aggregate demand curve for 2013 is represented by the equation AD = 4%, and the subsequent curve for 2014 by AD = 7%. To depict these on a graph, you would draw two downward-sloping lines on an Axis where the x-axis represents real GDP and the y-axis represents the price level, showing the shift from the original AD curve to the right for the new AD curve.
Factors that could have influenced this change include a rise in the components of aggregate demand, such as increased consumption spending, higher investment spending, an expansion of government spending, or a boost in net exports. These shifts can be the result of policy changes, like adjustments in taxes or government spending, or changes in personal choices impacted by consumer or business confidence.