What are Ferguson's six "killer apps" for explaining the rise of Western Civilization?

Take one of Ferguson's six "killer apps" and explain how it led to Western dominance.

What does Ferguson mean by "property"? Do you think this is an appropriate description of the "app" he describes?

Do you think that Ferguson provides the reader with good arguments for having some restored confidence in the progress of Western civilization?

What in your opinion is Ferguson's most powerful "app"? Make your case.

What are the biggest threats to contemporary Western civilization on Ferguson's view?

Compare and contrast the Islamic and Chinese competitor civilizations, both past and present, to Western civilization. Why is either a threat? Why haven't they been threats in the past? And which is the greater threat on Ferguson's view?