アメリカの太平洋北西海岸沿いに住む原住民は、おそらくアジアから移住した種族の子孫なのである。

Sentence Analyzer

English Translation

The natives of the North-West Pacific Coast of America were probably descendants of tribes from Asia.

Furigana

アメリカの太平洋(たいへいよう)北西(ほくせい)海岸沿(かいがんぞ)いに住(す)む原住民(げんじゅうみん)は、おそらくアジアから移住(いじゅう)した種族(しゅぞく)の子孫(しそん)なのである。

Romanji

Amerika no Taiheiyō hokusei kaiganzoi ni sumu genjūmin wa, osoraku Ajia kara ijūshita shuzoku no shison na no de aru.

Words

亜米利加 (アメリカ)

America; United States of America

の (の)

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

太平洋 (たいへいよう)

Pacific Ocean

北西 (ほくせい)

northwest

に (に)

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

住む (すむ)

to live (of humans); to reside; to inhabit; to dwell; to abide

原住民 (げんじゅうみん)

native people; aboriginal; indigenous people

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

恐らく (おそらく)

perhaps; likely; probably; I dare say

亜細亜 (アジア、あじあ)

Asia (esp. "the Far East"); Asian; Asiatic

から (から)

from (e.g. time, place, numerical quantity); since; from (originator); by; because; since; out of (constituent, part); through (e.g. window, vestibule); after; since

移住 (いじゅう)

migration; immigration

種族 (しゅぞく)

race; tribe; family; species

子孫 (しそん)

descendants; posterity; offspring

だ (だ)

be; is; indicates past or completed action; indicates light imperative

或 (ある)

a certain ...; some ...