I'm looking for a speech for declamation, and my father suggested that I declaim the speech that was given to the British Parliament convince them to not aid the South (leading up to the civil war), as they provided most of the cotton to Europe. This speaker (who is I don't know) used the argument that Britain had already outlawed slavery and it would be hypocritical to aid the Southern US who was fighting to keep slavery.

I'm sorry for the vagueness of this, as I cannot find evidence of this speech or who gave it online. If anyone has an idea as to what I am talking about (or suggestions for a similar declamation piece) it would be greatly appreciated.

Thanks!