YOU SAID:

One of the key elements of the ie seido was primogeniture.

INTO JAPANESE

すなわちseidoの重要な要素の1つはprimogenitureでした。

BACK INTO ENGLISH

Thus one of the key elements of seido was primogeniture.

INTO JAPANESE

このように、シドの重要な要素の1つは原産性でした。

BACK INTO ENGLISH

Thus, one of the key elements of Sid was its origin.

INTO JAPANESE

したがって、Sidの重要な要素の1つはその起源でした。

BACK INTO ENGLISH

Thus, one of the key elements of Sid was its origin.