YOU SAID:

all the bird died in 1918 due to Reagen killing them and replacing them with spies

INTO JAPANESE

Reagenがそれらを殺し、スパイに置き換えたことにより、1918年にすべての鳥が死亡しました。

BACK INTO ENGLISH

All birds died in 1918 because Reagen killed them and replaced them with spies.

INTO JAPANESE

リーゲンがそれらを殺し、スパイに置き換えたため、すべての鳥は1918年に死にました。

BACK INTO ENGLISH

All birds died in 1918 because Regen killed them and replaced them with spies.

INTO JAPANESE

Regenがそれらを殺し、スパイに置き換えたため、1918年にすべての鳥が死亡しました。

BACK INTO ENGLISH

All birds died in 1918 because Regen killed them and replaced them with spies.