"provide for the common defence” would be the phrase that was included in the Preamble to the Constitution to ensure a military that could protect our country. Although we take it for granted today, it was not ensured for some time that there would be a military.
I believe the answer you are looking for is: "a violent or destructive protest." The government would be most likely to become involved in a union protest that is violent or destructive.
Found this myself:
Which British policy convinced many American colonists to want to form their own country?
A. Great Britain separated the colonial governments into three branches.
B. Great Britain ignored the colonies during the French and Indian War.
C. Great Britain did not allow the colonists to participate in government.
D. Great Britain planned to sell several of the colonies to the French
The correct answer is C.
Answer: Political rulers assumed authority based on the divine right of kings.
Explanation:
Factor 1: Who decides to run for office and what advantages candidates have over one another.
Factor 2: Incumbency. Usually the incumbent (the person already serving in the office) has a large advantage over challengers, unless negative events have the voters wanting to get rid of incumbents.
Factor 3: The way congressional districts are drawn. There have been court cases recently about "gerrymandering" -- attempts by a party in power to draw district boundaries in ways that will serve to perpetuate that party's power.