Answer:
Riders are usually created as a tactic to pass a controversial provision that would not pass as its own bill. Occasionally, a controversial provision is attached to a bill not to be passed itself but to prevent the bill from being passed (in which case it is called a wrecking amendment or poison pill).
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The enlightenment started in 1715 and ended in 1789 so it lasted 74 years
A historian using the thinking skill of primary source analysis might try to "get in the mindset" of the writer or speaker of the source in question, in order to gain more insight into their life and environment.
They delivered short, patriotic speeches to gain support for the war.