I am not sure what this is asking for but there are three branches of government which are Legislative, executive and judicial.
To lay the foundations for a world government that would replace existing nation-states and their militaries is the statement that is not a purpose of the United Nations as described in the United Nations Charter of 1945. The correct option among all the options that are given in the question is the last option.
The correct answer should be the United States
This is because of the way that the political system is based in the United States where local support is very important due to the electoral system and the high number of districts. Volunteering to help a candidate can be really helpful in the United States, especially in swing states where you might get many voters to support a side.