The proper use of safety equipment in your vehicle has the potential to .

Reduce injury.

Explanation:

Using safety equipment properly in a car that cause injury, accidents and even death from happening. An equipment such as a seatbelt is a very important equipment to wear in a car and it is even against the law not to wear it. Such laws help to reduce risks of injury during any accident. Some other safety equipment include spare tyre, torch, extra batteries, fire extinguisher.

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answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

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money is the anwser i think