What authority does Congress have over other states according to Article III of the Constitution? Over federal territories?

http://caselaw.lp.findlaw.com/data/constitution/article03/

Thank you for your help.

You're welcome.

I just have one more question on this matter; does the Congress's power to declare treason to a person/ establish inferior courts in states pertain to the federal territories as well?

According to the Constitution, Article III specifies the authority that Congress has over other states and federal territories. However, it is important to note that the extent of Congress's authority differs for states and federal territories. Let's break it down.

1. Authority over states:
Article III confers several powers upon Congress regarding states, including:
- Regulation of interstate commerce: Congress has the authority to regulate trade and commerce between states through the Commerce Clause (Article I, Section 8).
- Taxation and spending: Congress can levy taxes, spend money, and allocate federal funds for the general welfare of the country.
- Naturalization and bankruptcy laws: Congress has the power to establish rules and regulations regarding the naturalization process and bankruptcy laws.
- Courts: Congress can establish federal courts, including the Supreme Court, with the power to hear cases involving federal law and disputes between states.

2. Authority over federal territories:
Congress has broad authority over federal territories, which are areas not designated as states. This authority is outlined in Article IV, Section 3, Clause 2, known as the Property Clause. The key points include:
- Power to govern: Congress has the authority to make all needful rules and regulations regarding federal territories.
- Territorial rights: Congress has the ability to sell, dispose, and make rules for federal territories.
- Admission of new states: Congress has the authority to admit new states into the Union, subject to certain conditions.

In summary, Article III grants Congress specific powers over states, primarily relating to commerce, taxation, federal courts, and certain laws. Article IV, Section 3, Clause 2 provides Congress with broad authority over federal territories, including the power to govern, sell, and admit new states.