Final answer:
Article IV, Section 3 of the United States Constitution grants several protections for states, including the power to admit new states, control over territory, regulation of national parks, and protection from external threats.
Step-by-step explanation:
Article IV, Section 3 of the United States Constitution grants several protections for states. Firstly, it grants the federal government the power to admit new states into the Union, as well as control and make decisions regarding all the territory belonging to the United States. This includes territories and parts of states. Additionally, it gives the federal government authority to establish and regulate national parks within the borders of individual states. Finally, Section 3 protects states by ensuring that the national government will protect them from foreign invasions or any internal conflicts that may put Americans in danger.