I'm currently reading "Botany of Desire" and there are a couple questions that i'm unsure about. please help me because i'm very bad at critical reading.

1. why did Pollan find Chapman so significant to the history of the United States?
2. How does Bill Jone's interpretation of Chapman’s contribution to the development of the U.S. differ from Pollan’s?

Who’s right?

Not having read this book, I cannot help you with details. The best answers come from the text and your own interpretation of it.

Here are a few websites that may point you in a direction or two, though:

http://en.wikipedia.org/wiki/The_Botany_of_Desire
from http://www.google.com/search?q=botany+of+desire&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA