In a Keynesian model, a temporary increase in government purchases would cause output to ________ and the domestic real interest rate to ________, in the short run

Refer to the figure above. For an economy starting from the potential output a decrease in planned investment in the short run results in a

A. Recessionary output gap B. Expansionary output gap C. Increase in potential output D. Decrease in potential output

Between 1810 and 1860, the value of slaves in the United States

a. nearly doubled. b. tripled. c. increased nearly fourfold. d. increased nearly tenfold.