<span>Most likely A. plentiful natural resources
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The issue of suffrage caused controversy<span> because men didn't believewomen were capable of being able to have their own opinions tovote.</span>
It is hard to say without looking at your source (textbook or article if you have one associated with this question) but in the most recent studies, it has been Islam.
If your choices are the following:
a). John Sloan
b). George Washington Plunkitt
c). Thomas Nast
d). William M. Tweed
Then the answer is d). William M. Tweed.