translate English to French: Part of this decline is attributable to the interruption of Canada-US trade flows associated with the September 11, 2001, terrorist attacks while some is due to the US recession that began roughly six months earlier.
Cette baisse est attribuable en partie Ã l'interruption du flux commercial aprÃ¨s les attentats terroristes du 11 septembre 2001, et aussi Ã la rÃ©cession qui avait dÃ©butÃ© six mois plus tÃ´t aux Ã‰tats-Unis.