How to say because he lived in the united states for five years. in Japanese
1)
５５(５) (num) five年間年間(nenkan) (n-t) yearアメリカアメリカ(amerika) (ateji) america/united states of americaにに(ni) (prt) indicates such things as location of person or thing, location of short-term action, etc.住んno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verbでで(de) (prt) indicates location of action/at/in/indicates time of action/indicates means of action/cause of effect/by/and then/so/indicates continuing action/ indicates certainty, emphasis, etc.いい(i) (prt) strengthens a question, assertion, etc.たからだよno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verb。。(。) Japanese period "."
