この紹介状は叔父によってかかれた。

この紹介状は叔父によってかかれた。

My uncle wrote this letter of introduction.

この紹介状(しょうかいじょう)は叔父(おじ)によってかかれた。

Kono shōkaijō wa oji niyotte kakareta.

此の (この)

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

紹介状 (しょうかいじょう)

letter of introduction

は (は)

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

叔父 (おじ、しゅくふ)

uncle (younger than one's parent)

に因って (によって)

according to; by (means of); due to; because of

Reading: ショウ

Meanings: introduce, inherit, help

Reading: カイ

Meanings: jammed in, shellfish, mediate, concern oneself with

Reading: ジョウ

Meanings: status quo, conditions, circumstances, form, appearance

Reading: シュク

Meanings: uncle, youth

Readings: フ、ちち

Meaning: father