ひいては
(Hiiteha)
by extension / ultimately / eventually.
Connection rules
- +[immediate statement]、ひいては [broader / longer-term consequence].
- +Extension / broader consequence — 'and by extension'.
- +Common in analytical writing that traces chains of effect.
Examples
1.
健康は自分のためであり、ひいては家族のためでもある。

Kenkou wa jibun no tame de ari, hiiteha kazoku no tame de mo aru.
Health is for yourself, and by extension, for your family.
「by extension / ultimately / eventually」
2.
教育は個人の成長、ひいては社会の発展につながる。

Kyouiku wa kojin no seichou, hiiteha shakai no hatten ni tsunagaru.
Education leads to personal growth and, by extension, societal development.
「by extension / ultimately / eventually」
Practice
Environmental protection leads to the protection of our health, and by extension, the future of the earth.
環境保護は我々の健康を守り、___地球の未来を守ることにもつながる。
Romaji also accepted