#2. Global financial crisis
A financial crisis can occur if institutions or assets are overvalued, and it can be exacerbated by irrational investor behavior. A rapid string of selloffs can further result in lower asset prices or more savings withdrawals. A crisis can cause an economy to go into a recession or depression. Any rolling emerging-market debt crisis would cause considerable panic across the global capital markets. Can require governments in several economies to step in to shield their banks from the fallout.