Why does sen. hammond believe slaves exist in the north as well as the south? who are these "slaves"?

1) the french and indian war was a smaller war that was a part of what larger european war? 2) what was the first direct tax placed on the colonies by the british government? 3) how did the stamp act affect the prices of goods? 4) what happened to the stamp act as a result of colonist protest, boycotts, and the stamp act congress?

What would lead a historian to consider two events to have a relationship of correlation rather than causation

One day as your professor is driving to work, another driver runs through a red light and hits his car. the professor is shaken up but survives the accident. however, the next time he starts to enter the intersection,he becomes nervous and fearful. soon,he starts going to work via another route to avoid the intersection even though this route adds twenty minutes to his commute in each direction. according to the principles of classical conditioning, why does the professor become scared of the previously harmless intersection? what can he do about this, as going via other route is very time consuming? be specific. break down the situation into its parts and show how the principles of learning apply.