YOU SAID:
I took my favorite food over the border.
INTO JAPANESE
大好きな食べ物を持って国境を越えました。
BACK INTO ENGLISH
I crossed the border with my favorite food.
INTO JAPANESE
大好きな食べ物で国境を越えました。
BACK INTO ENGLISH
I crossed the border with my favorite food.
That didn't even make that much sense in English.