In recognizing Check Mutai 's mark as the `` fastest Marathon ever run '' , the International Association of Athletics Federations noted Communication that the performance Cause_to_make_progress was not eligible for world record status given Giving that the course does not satisfy rules regarding elevation drop ( it has `` more than three times the elevation drop permitted for record-setting '' ) and start/finish separation .

This led to Causation the separation Forming_relationships of the right-hand SRB 's aft field joint Collaboration attachment and the structural failure of the external tank .

The separation caused Causation the plane to pitch Motion violently downward ; the gyroscopic loads combined Cause_to_amalgamate with inertia to cause Causation all four engine nacelles to break Destroying upward .

Even so , one of the more lasting effects Influence may have been decisions Deciding in both white and black communities to seek greater separation Preventing_or_letting from each other .

The engine separation Forming_relationships was attributed Judgment_communication to damage to the pylon structure holding Defending the engine to the wing , caused Causation by improper maintenance procedures used Using at American Airlines .

This ephemeral Catholic monarchy was changed Change to a federal republic in 1823 , due Causation both to internal conflicts Hostile_encounter and the separation Forming_relationships of Central America from Mexico .