<span>The tyrants were able to seize control in Athens because they had the backing of the common people</span>
<span>The social criticism in Upton Sinclair's The Jungle was a response to the working conditions faced by immigrants.
Immigrants often have a difficult time getting accustomed to their new country and its culture, and the jobs are no different. Usually, the conditions they have to work under are quite difficult, which Sinclair is trying to convey in his work.
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It was important in the development of astronomy and science because it was the first model that aimed to predict how the planets move in their orbits. Despite being a complicated mix of circles and epicycles it was not a bad model and it worked well for at least 1500 years until observations became accurate enough to show its imperfections