正統 せいとうカリフ時代 じだいではありません
seitōkarifujidaidewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 正統カリフ時代

1. Not the era of the orthodox caliphate.; It is not the era of the orthodox caliphate.

Negative
Polite
Formal Register