Wagner act" is the law among the choices given in the question that most directly led to the General Motors sit-down strike in 1936. The correct option among all the options that are given in the question is the fourth option or option "D". I hope the answer comes to your help.
Common Sense (pamphlet) ... Common Sense is a pamphlet written by Thomas Paine in 1775–76 advocating independence from Great Britain to people in the Thirteen Colonies
The fall line is a zone rather than a line true