Answer:
An example of a single-issue party would be: Prohibition party
Single issue party refers to a party that created in political landscape to fight only for one specific issue. Prohibition party could be considered as an example of single-issue party because it was created specifically to oppose the sales of alcohol related products.
Explanation:
The northeastern coast of the US is the largest area in Canada and the United States that is densely populated with over 250 people per square mile. Boston, New York, Philadelphia and Washington are located in this area.
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Third parties have shown their power by getting the major parties to react to issues.
Since they are usually too small to impact the House of Representatives, the Senate, or elect presidents, they resort to something less impactful,such as the third option.