Question

written agreement between 2 or more states *
choose
! this is a required question
laws relating to disputes between individuals or groups *
choose
taxes levied on an individuals income, has become a huge source of income for the united states
choose
government agencies are audited to see if they are still vital *
choose

Explanation:

1. For "Written agreement between 2 or more states", the term is "Treaty". Treaties are formal written agreements entered into by sovereign states (or other international entities) to establish obligations and rights between them.
2. For "Laws relating to disputes between individuals or groups", the term is "Civil Law". Civil law deals with private rights and obligations, including disputes between individuals, organizations, or between individuals and organizations.
3. For "Taxes levied on an individual’s income, has become a huge source of income for the United States", the term is "Income Tax". Income tax is a tax imposed on the income of individuals (and also businesses in some cases) and is a major revenue source for the US government.
4. For "Government agencies are audited to see if they are still vital", the term is "Sunset Review" (or "Sunset Provision - related audit"). Sunset reviews assess government agencies to determine if they should continue to exist, be reorganized, or be terminated, evaluating their vitality and effectiveness.

Answer:

1. Written agreement between 2 or more states: Treaty
2. Laws relating to disputes between individuals or groups: Civil Law
3. Taxes levied on an individual’s income, has become a huge source of income for the United States: Income Tax
4. Government agencies are audited to see if they are still vital: Sunset Review