According to Aristotle, both tragedy and epic are forms of imitation. Tragedy imitates directly by means of mimesis and epic both directly and indirectly by means of mimesis and diegesis. While epic imitates solely by means of words, tragedy also imitates by means of spectacle. Both epic and tragedy portray people better or greater than the average spectator, unlike comedy which portrays people as worse than they actually are and uses humour to dissuade us from acting badly (Aristotle's lost treatise on comedy may be summarized in the Tractatus Coislinianus; see also Eco, The Name of the Rose for interesting view of Aristotle on comedy)
Due to practical constraints of production, tragedy ideally has a single unified action which is often restricted to a specific time and place. and a small n umber of characters, while epic has a broader scope of coverage.
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<span>Prior to the Mexican American war president Polk sent John Slidell to Mexico to negotiate an agreement between that the Rio Grande River would be the southern border of Texas. ... The United States annexed the territory of California in 1848 following its victory in the Mexican-American War.</span>