Thousands of african american soldiers served bravely in a ww2 flight crew known as the a. nisei airmen b. navajo code talkers c. tuskegee airmen d. harlem flyers

Which of the following statements is true for all european union countries a. they each have their own hereditary monarchy b. they each have their own national currency c. each has its own democratic government d. each practices roman catholicism

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.

What from the columbian exchange had perhaps the biggest impact on the world?