All of the options listed are powers of the federal branch of government, granted under the Constitution, except "regulate elections," and "set up town governments," since regulating elections is mostly up to the state (although the federal government can technically intervene) and setting up town governments is a local issue.
The answer to this question is martial law refers to the period of time from December 13,1981 to July 22 1983 when the authoritarian communits government of the people's Republic of poland.
It made the practice more common and tolerated.
