Evaluate the positive and negative effects of the Columbian Exchange between Afro-Eurasia, the Americas, and the Caribbean between 1450-1900.

See diagram.we use washers to get the area and we will be integrating with respect to xouter radius is the  distance between y = e^x and y = -1    inner radius of washer is the distance between y = 1 and y = -1    the area of one cross-section of a washer is    solid lies between x = 0 and x = 2. the volume is    if you need this expanded, then    the question doesn't say to evaluate, so we're done.   

How are we suppose to know this

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Weather is one. the economy is another.