Are you talking about Ogdei Khan? Because he was the successor of Tolui.
Contact me if that wasn't it.
Answer:
Thank you, Atleast someone agrees.
Just by common sense we can rule out both C and B because neither of those make sense for this case. High population really doesn’t matter. So the most logical answer is D. Mostly Defending Familiar Territory
January 29, 1919, Congress ratified the 18th Amendment, which prohibited the manufacturing, transportation and sale of alcohol within the United States; it would go into effect the following January.