The uprising Change_of_leadership was provoked Causation principally by the Civil Constitution of the Clergy ( 1790 ) and the `` levée en masse '' ( 1793 ) undertaken by the National Convention .

A preliminary finding by investigators concluded Coming_to_believe that sparks from welding work being done on the building , undertaken by unlicensed welders , ignited scaffolding around the structure , which led to Causation the apartments ' destruction Destroying .