European leaders unveiled an unprecedented loan package worth almost one trillion US dollars and a program of bond purchases in an attempt to bolster the Euro that has become highly vulnerable because of the Greek sovereign-debt crisis.
Global stock markets closed sharply Friday amid investor fears that Greece's debt crisis could halt the global economic recovery.
United States regulators and stock exchanges are searching for answers after what is believed to be an electronic trading error set off a heart-stopping plunge in markets that rivalled the crash of 1987.