<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be "none," since they all have to do with the elections and/or words of Lincoln, which had a very big impact on secession. </span></span>
Yes. It can be assumed that Sumner had the support of the people as the legislature was popularly elected. The legislature also passed Sumner's own Objections to the Mexican War. This appears to be another sign that he was respected and had the support of the voters of Massachusetts.
Well do you mean like how one invention of the light bulb was made but then it help make a car?