▁NAS CRE - 5 ▁ ▁References ▁ ▁External ▁links ▁ ▁I SC RE ▁web ▁site ▁ ▁Category : Ch em ical ▁react ors ▁Category : Ch em ical ▁engineering <0x0A> </s> ▁A ▁comparison ▁of ▁Canadian ▁football ▁and ▁rugby ▁league ▁football ▁can ▁be ▁made ▁because ▁of ▁their ▁shared ▁orig ins , ▁resulting ▁in ▁similar ities ▁and ▁shared ▁concepts ▁in ▁terms ▁of ▁scoring ▁and ▁adv ancing ▁the ▁ball . ▁As ide ▁from ▁American ▁football , ▁rugby ▁league ▁is ▁the ▁sport ▁most ▁similar ▁to ▁Canadian ▁football . ▁Both ▁sports ▁involve ▁the ▁concept ▁of ▁a ▁limited ▁number ▁of ▁' down s ' /' t ack les ', ▁and ▁in ▁both ▁sports ▁scoring ▁' touch down s ' /' t ries ' ▁takes ▁a ▁clear ▁preced ence ▁over ▁goal - k ick ing . ▁ ▁Orig ins ▁ ▁British ▁colon ists ▁and ▁the ▁British ▁military ▁in ▁Canada ▁brought ▁rugby ▁football ▁to ▁North ▁America . ▁It , ▁along ▁with ▁association ▁football , ▁became ▁popular ▁in ▁Canadian ▁and ▁American ▁ ▁univers ities . ▁At ▁the ▁time ▁association ▁football , ▁or ▁" s occer ", ▁and ▁rugby ▁were ▁not ▁as ▁differenti ated ▁as ▁they ▁are ▁now ▁and ▁teams ▁would ▁negoti ate ▁the ▁rules ▁before ▁playing ▁a ▁game . ▁The ▁sports ▁of ▁Canadian ▁football ▁and ▁American ▁football ▁evol ved ▁from ▁these ▁inter col leg iate ▁games . ▁ ▁Meanwhile , ▁in ▁England ▁a ▁sch ism ▁developed ▁in ▁rugby ▁football ▁between ▁those ▁who ▁fav oured ▁strict ▁amateur ism ▁and ▁those ▁who ▁felt ▁that ▁players ▁should ▁be ▁compens ated ▁for ▁time ▁taken ▁off ▁work