The Ostend Manifesto

This was the failed attempt to acquire Cuba in 1854. Tell me:

 1) Why America was interested in purchasing Cuba?

 2) What happened when they proposed purchasing Cuba from Spain (what was the offer, and Spain's response)?

 3) What was the manifesto, and why was it written?

 4) How was the manifesto received once it became public?

 5) What was the final outcome of the Ostend incident?

Two to three pages.