What do the three abrahamic faiths—christianity, islam, and judaism—have in common? all believe in one god. all believe that jesus was the messiah. all have specific sacraments. all believe the hadith is sacred.

The answer is they all believe in one god.

Explanation:

Judaism, Christianity, and Islam are all monotheistic faiths (believing in 1 god). Islam and Christianity can all trace their roots to Judaism, and Jesus Christ is considered to be a prophet in Islam.

the two things that develop a strong social foundation are: a. separation of church and states e. education received attention separation of church and states separate the illogical  argument that came from religious beliefs to a fact based belief. while education will make us remember the past to avoid the repeat of our mistakes.