Answer: So if you used the balloon experiment her is the answer
We also know that air has mass because the balloon with air was heavier than the balloon without air. So by our definition of matter as something with mass that takes up space, we can see that air is matter!
Explanation:
They used the power and differnce of how the movement went
President James Monroe’s 1823 annual message to congress contained the Monroe Doctrine, which warned European powers not to interfere in the affairs of the Western Hemisphere.
