Answer and Explanation:
If this is an assumption, I would say that the "normal" things in the society in which Romeo and Julieta lived were: teenage marriages (since life expectancy was low), marriage between members of the same family (to keep wealth in the family). family and family purity), the control of society by members of the royal family, a strong religiosity among people.
Likewise, I suppose that within this society it was unusual: mortal enemies among families, sword fights in the middle of the street, priests encouraging young people to flee and marry in secret, drugs that simulate death, young people disobeying their families to get married, priests allowing a girl to pretend she died, intruders at family parties and people killing themselves because they lost the person they love.