With a POD not before 1882 (the beginning of the first wave of Jewish mass immigration to the Middle East) your challenge is to make Hebrew a thriving spoken language with speakers numbering in the millions. Bonus points if you can make it one of the official languages of a sovereign nation -- super-bonus points if it's the only official language of that nation.
To start you off: apparently there were a few attempts at reviving Hebrew as a commonly spoken language, most recently around the beginning of the 20th century, but they all petered out for one reason or another.
To start you off: apparently there were a few attempts at reviving Hebrew as a commonly spoken language, most recently around the beginning of the 20th century, but they all petered out for one reason or another.