While studying the role of saliva in digestion of dogs Pavlov accidentally discovered Classical Conditioning, which denotes a <span>learning procedure in which a biologically potent stimulus (e.g. food) is paired with a previously neutral stimulus (e.g. a bell).</span>
In the case of the dogs Pavlov observed, the salivation was the unconditioned response and the salivation was the conditioned response.
The Spanish established permanent settlements in North America. The first settlement was a Spanish fort called St. Augustine in Florida. It was established in 1565. Its primary function was that of a base camp for explorers who explored the continent. It was also used as a centre to convert the local Native Americans to Roman Catholicism. There were a few settlements established in outlying areas. These did not last. They were either attacked and destroyed by the Native Americans, or they had to close because they could not support themselves economically.
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<span>the system of checks and balances give the authority to confirm judges </span>to the senate.
