The correct answer to this question is A) the substantial power held by Boss Tweed and Tammany Hall was achieved through political corruption.

Based on the political cartoon, the conclusion that can be made about Boss Tweed and the Democratic Party political machine known as Tammany Hall is that the substantial power held by Boss Tweed and Tammany Hall was achieved through political corruption.

In the cartoon, we can see the image of Boss Tweed with a bag of money instead of head and the title “The Brains.” And then, at the bottom of the cartoon a footnote that follows the title: The Brains that achieved the Tammy victory at the Rochester Democratic Convention.”

This political machine was based on corruption practices. Too much money and concessions were given to maintain its political power. The political machine dominated New York City from the mid-1800s to 1934.