They lived in one-room fire-mud bricked houses.
He should consult an archaeologist. They study ancient studies looking for remains of buildings, objects, people, etc. They learn a lot about our past and what our ancestors were like through archaeology.
The main reason why the US sent troops to overthrow Afghanistan's government in 2001 was because the nation was harboring members of the terrorist group al-Qaeda, which was responsible for the 9/11 attacks.
Answer is, King Christian X
Definition: Traditionally, the term "international conflict" referred to conflicts between different nation-states and conflicts between people and organizations in different nation-states.