During the semester, our lectures have often made reference to economic research. Which of the following are findings of that research? $($Check all that apply.$)$

$$ A modest level of growth in the money supply can facilitate greater economic growth.

As a nation gets richer at first they pollute more, but then hit a point where they pollute less.

Tariffs protect jobs in one industry, but result in net jobs either staying the same or falling.

Corporate greed is usually the cause of higher inflation in an economy.

Higher inflationary expectations can cause short$-$run aggregate supply to shift to the left.

There is likely a tradeoff between fiscal policy to stabilize the economy and the level of economic growth.

Wage and price controls are an effective way to control inflation.