What are the titles of several books related to the antiquities of the city of Samarra, located in Salah al-Din Governorate, Iraq, before Islam and after Islam?

hello there, can you add the "following" multiple choices

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.