Q&A: If a Jewish couple adopt an infant of unknown ancestry, is the baby automatically considered Jewish?

by jensmith826
Question by WOODSEY NILES: If a Jewish couple adopt an infant of unknown ancestry, is the baby automatically considered Jewish?
Suppose a Jewish man and a Jewish woman marry. They then legally adopt a baby whose history is not known.

Would that baby automatically be considered Jewish, just as the biological baby of a Jewish mother would be? Or would some other ritual have to take place, other than those rituals that would naturally take place with any person whose

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