The 55th president is donald trump
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.
Answer is c bc it’s the one that makes the most sense
They Turned to fishing, among other industries