(1) The Morrill Tariff did not pass until the South seceded. To blame it for secession is contrary to facts. In addition, the Morrill Tariff raised effective rates by 70%, which was less than a doubling, not a tripling.
(2) Reflecting growing abolitionist sentiment in the North and Midwest, The Republican Party was dedicated to putting slavery on the path to extinction by preventing its expansion to additional states and cordoning off slave states with free states. This platform alarmed the South even as it helped lead to Lincoln’s election in 1860, which then triggered secession.
Nullification crises. Look it up.
Then figure out a way to blame it on slavery instead of a greedy northern controlled congress.
Hardly. Everyone knew the Morrill Tariff was going to pass.
In addition, the Morrill Tariff raised effective rates by 70%, which was less than a doubling, not a tripling.
You think they were going to stop at one bite of the apple? No way. The Morrill Tariff was hiked again and again until it was triple the rate of the 1857 tariff and right back to where the Tariff of Abomination was. Everyone knew that's where it was headed - and said as much.
(2) Reflecting growing abolitionist sentiment in the North and Midwest, The Republican Party was dedicated to putting slavery on the path to extinction by preventing its expansion to additional states and cordoning off slave states with free states. This platform alarmed the South even as it helped lead to Lincoln’s election in 1860, which then triggered secession.
The Republican Party and the North in general only wanted to prevent the spread of slavery to the Western territories so as to gain effective control over the US Senate which they would then use to pass very high tariffs and ever more subsidies for Northern companies and infrastructure projects. There was hardly any support for abolition.