Federalist Paper

Who is the author of the Federalist Paper?
What main issue(s) the author is addressing?
What central argument the author is making(i.e, what is (are) the solutions that the author is proposing)?
When and Why was each Federalist Paper written?
How does this argument (or central idea) apply in today’s American politics?
The link to the federalist papers. https://guides.loc.gov/federalistpapers/full-text