Is footprint a concrete or abstract noun?

The internet is controlled by: (select one): a. statutes and court cases in federal and state courts in the united states. b. the advanced research projects agency (arpa) and the u. s. department of defense. c. no single government or organization. d. google, yahoo, and the other search engines which have proprietary interest in the content thereon.

The long english tradition of figured prominently in the founding fathers' discussion of the ownership of firearms. a) police squads b) target practice c) aristocratic rifle associations d) militias

According to the theory of mercantilism, a country is strengthen by