If we're talking about the final nail in the coffin than I'd guess A. I'm fairly certain that Timur the Lame didn't invade Spain. Invasion was more of the Mongol's style than putting a figurehead on any throne. Correct me if I'm wrong based on what your resources say.
The society has been industrialized.
D.,
A, B, and C have the solution of the system of Equations (2,1) But D has a solution of (1,2).
An unanswered Constitutional question about the judicial branch is how to create lower federal courts. Explanation; According to the constitution the power to interpret the law of the United States will be held by the U.S. Supreme Court, and the lower federal courts.
The area around India and the Indian Ocean.