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A. the regulation of schools
Explanation:
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Answer:
Im only adding this because i want to finish my account
Explanation:
Einstein's two postulates of special relativity are as follows, 1. The principle of relativity: The laws of physics are the same in all inertial systems. ... The constancy of the speed of light: Observers in all inertial systems mea- sure the same value for the speed of light in a vacuum.
War, the systems and national bank