The Dred Scott decision<span> served as an eye-opener to Northerners who ... to regulate</span>slavery<span> in </span>new territories<span>, these once-skeptics reasoned, ... to the reality instead, that the </span>Supreme Court has made<span> Illinois a </span>slave<span> State. ... </span>did<span> not stop </span>slavery<span> now, they might never again </span>have<span> the chance. </span>
Mississippi River is the answer
Credit was a new thing, banks didn’t have the money for loans, to much production and not enough consumers (inflation)
Britain, the major power involved in the Atlantic slave trade, passed the comparable Abolition of the Slave Trade Act that same month.