State the relationship between leakages and injections when they’re equal

When leakages equal injections, total spending will equal total output and the macroeconomy will be in equilibrium. ... If injections exceeds leakages, then total spending exceeds total output and the level of national output will rise. Equilibrium may be reached at a level of GDP in which there is unemployment.

Explanation:

industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations.

answer; presidential election years;