The three signers are: Josiah bartlett, Matthew Thornton,and William wipple
Government related: you attend school. Schools are monitored and supervised by the government. Your learning is also studied in various ways by the government.
Economy related: One of the most obvious ways in which government and the economy interact in your daily life is through taxes. Even if you do not work, when you buy anything at a store, you are most likely paying taxes on those items.
It would be "NAFTA", which stands for the "North American Free Trade Agreement" that is a treaty to eliminate all trade barriers between Canada, Mexico, and the United States, since each state believes this to be in thier best economic interest.
The answer to this is Congress