anyone have any idea?

a) Louisiana Purchase
b) embargo
c) war of 1812
d) John Marshall Supreme Court decisions
1. mcCulloch v. Maryland
2. dartmouth college v. woodward
3. gibbons v ogden
e) adams-onis treaty
f) monroe doctrine

i think i know a couple of them but i dont know HOW they contributed or why? err...yeah .. kinda confused. :confused:

i've researched my book (The American Pageant, 11th edition) for most of the information. i've been able to find minimal, if any, info good enough to draft a brief summary. i've also done some reserach on search engines, but not much luck there.

if anyone can help, that'd be awesome. :)
thanks