When a Greek city-state, or polis, was too crowded and farmland became scarce, some people would leave and establish these elsewhere

england is crowded cold and polluted while north america was like the opposite

during the 1920s the goal of the united states was not letting business collide or go down or even compete this was due to wwl

basically means the stoc market is going down since   dow is one of the most sucessful buiness it would be a tragedy for it to go down and it ensures the ruinty of the stock market