What would need to occur for a Jewish nation with a Jewish majority to be created in Yemen or anywhere else on the Arabian peninsula?
What would need to occur for a Jewish nation with a Jewish majority to be created in Yemen or anywhere else on the Arabian peninsula?
Prevent the collapse of the Himyarite Kingdom, which occured about a century before Muhammad was born. A long-lasting Jewish state would probably convert most of the population at some point.
Of course, in order to secure Himyar's survival, you'll probably have to prevent the rise of Islam as well, or else have Muhammad be some kind of radical Jew (though one can argue this is OTL, Islam has a great many theological similarties to Judaism, much more than it shares with Christianity)