For the first question regarding the political cartoon of Boss Tweed and his associates, the bones and skulls symbolize:
Groups and institutions harmed by Tweed’s corruption.
For the second question about the unintended result of mechanized farming, the response would be:
Overproduction, leading to a decrease in crop prices and financial hardship for farmers.
(Note: You only provided the beginning of the response options for the second question. If you need a deeper explanation or the completion of the responses, please provide the remaining options.)