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** [[Civilization Package]] | ** [[Civilization Package]] | ||
** [[Industrial Package]] | ** [[Industrial Package]] | ||
* "packages" are useful for students to understand distinctions in historical places, eras, and outcomes | |||
** ex., the industrialization "package" of the 1870's United States included the Civil War, immigration, laissez-faire governance, plentiful resources, etc., | |||
*** whereas the industrialization "package" of 1870s India included plentiful resources, high population, British governance and colonial resource manipulation, | |||
*** thereby India did not industrialize in the 1870s the same way as did the U.S. | |||
=== Grandfather paradox === | |||
* the idea that time travelers who changes the past may erase their own future lives, thus themselves | |||
* was expressed in 1931 in a reader letter to a science fiction magazine that discussed: | |||
<pre>"the age-old argument of preventing your birth by killing your grandparents"</pre> | |||
== Effects == | == Effects == |