It was A. Densely wooded forests.
South Carolina was the first state to declare secession because of him because they believed, just like the nullification crisis, that Lincoln's policies were favoring north and were Against the south. Unlike the Jackson era where the thing in question was tariffs, here it was resolving about slavery.<span />
The answer is A. the sinking of the Lusitania
I know that one of the places was Western Asia.Turky too. Ireland also. But I do not know of a 4th. sorry