▁War , ▁some ▁two ▁gener ations ▁prior ▁to ▁Ca esar ' s ▁invasion ▁of ▁Ga ul . ▁ ▁The ▁Swiss ▁plate au ▁was ▁gradually ▁roman ized ▁during ▁the ▁ 1 st ▁to ▁ 3 rd ▁centuries . ▁The ▁principal ▁Roman ▁settlement s ▁were ▁the ▁cities ▁of ▁I ul ia ▁E quest ris ▁( N y on ), ▁A vent icum ▁( A ven ches ), ▁August a ▁R aur ica ▁( A ug st ) ▁and ▁V ind on issa ▁( W ind isch ). ▁Ev idence ▁has ▁also ▁been ▁found ▁of ▁almost ▁twenty ▁Roman ▁villages ▁( v ici ) ▁and ▁hundreds ▁of ▁vill as . ▁ ▁In ▁the ▁course ▁of ▁Roman ization , ▁the ▁C elt ic ▁poly the ism ▁of ▁the ▁Hel vet ians ▁was ▁syn cret ized ▁ ▁with ▁Roman ▁religion . ▁The ▁C elt ic ▁de ities ▁came ▁to ▁be ▁worship ed ▁under ▁the ▁names ▁of ▁their ▁Roman ▁counter parts , ▁and ▁Roman ▁gods ▁acquired ▁the ▁names ▁of ▁local ▁gods , ▁such ▁as ▁ ▁Mars ▁C atur ix , ▁ ▁Mercur ius ▁C isson ius ▁and ▁ ▁Jup iter ▁Po en inus . ▁A ▁major ▁cult ic ▁center ▁of ▁Gal lo - R oman ▁religion , ▁consisting ▁of ▁eight ▁chap els ▁or ▁small ▁tem ples , ▁was ▁found ▁in ▁All m ending en ▁near ▁Th un . ▁It ▁consisted ▁of ▁eight ▁chap els ▁or ▁small ▁tem ples ▁surrounded ▁by ▁a ▁wall . ▁De ities ▁wor sh ipped ▁at ▁the ▁site ▁included ▁Mars ▁( pres umably ▁in ▁lieu ▁of ▁C