BCOF

I didn't realize that southerners wanted to annex Cuba to extend Manifest Destiny. I thought Manifest Destiny was just to expand to the west. A question I had was, Why did the Polk go to war against Mexico to expand west, but not with Britan to expand north? Was it because he saw Mexico had more land for the taking and was less of a threat?
The other thing that I didn't know was that transporting slaves through free territory or states was an issue.