A historian would first look at the reliability of a source - when it was published and what was happening at the time (context), who wrote it and their qualifications, any bias the author may hold, whether author sources corroborate the source, whether the author has used references, whether the source provides evidence, who the source is representative of and whether the source provides a balanced perspective
Answer:
The Causes of the French revolution and the American revolution are similar because they both were partially prompted by an over-reaching monarch, another similarity was that both revolutions were started by the commoners who wanted revolution to improve their lives, however a key difference is that the American
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The Kepler theory about Planets
The Moon and the Sun gravitational forces affect our tides.