<span>It would be the Confederate cities of Atlanta and Savannah that were nearly burned to the ground late in the Civil War, since by this time the Union was implementing their harshest tactics in the hopes of forcing the South into submission. </span>
Did you ever find out the answer?
The answer is "B", varied ecological regions.
Oklahoma contains 10 distinct ecological regions. That is more ecological regions per square mile than in any other state by a wide margin.