Why does the author think that religion is not the cause of the democracy deficit

I CANNOT quote anything from the article!

What is the main objective of this study?
Why does the author think that religion is not the cause of the democracy deficit?

What is the “complex story” that emerges when the author discusses the impact of culture on democracy?

What is the impact of oil wealth?

What are the consequences of authoritarian practices like repression and limited (controlled) elections that the author discusses in the section titled Authoritarian Statecraft?

What about the impact of the three different items (i.e., foreign aid; Arab-Israeli conflict; and regional effects) discussed in the Geopolitics section?