A voilent protest, threats towards a school or a threat to a federal ran business such as a post office some banks police station etc.
Pamplets, writings, that sort of stuff
The Monroe Doctrine forbidden the European powers from colonizing in the additional lands in the Americas.
I think the correct answer from the choices listed above is option A. The event that have been an example of why the framers of the Constitution included the phrase "insure domestic tranquility" would be Shay's rebellion. <span> "Insure domestic tranquility"</span> <span> refers to the need to keep the peace and the assurance that people can conduct their lives and business without fear of social disorder, rebellions and riots.</span>