Pavlov was the researcher who first popularized the classical conditioning (where a certain conditioned response is created by associating a certain situation with a conditioned stimulus)
Counterconditioning was developed in order to reverse or reduce the effete of classical conditioning (usually carried out by enforcing positive reinforcement to the subjects)
Battle of Antietam is the eighth-costliest land battle of the American Civil War <span>also known as the </span><span>Battle of Sharpsburg. Hope this helps!!</span>
