Dakota
South Carolina seceded from the Union on 20 December 1860 and later joined with six other states to form the CSA in February 1861.
Secession winter was the winter of 1860-1861, when 7 southern states (South Carolina, Mississippi, Florida, Alabama, Georgia, Florida, Louisiana, and Texas) seceded in rapid succession.
South Carolina seceded in 1860. Georgia, Mississippi, and Texas had secession conventions without results.
The Governor General of the Province of Canada in 1860 was Sir Edmund Walker Head, 8th Baronet.
Pennsylvania, Ohio and Indiana :)
Pennsylvania, Ohio, & Indiana
Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio, Wisconsin.
Kansas, Iowa, Minnesota, Wisconsin, Michigan, Indiana and​ Illinois.
Manchester College - Indiana - was created in 1860.
The Southern States did not secede until 1860 due to the work of Henry Clay, "The Great Compromiser". His efforts included things like the Compromise of 1850 and the Kansas-Nebraska Act.
Oklahoma was not a state during the 1860's and was considered to be "Indian Territory" and initially controlled by the Confederate States.
Dakota
In 1860, the following territories and States were bordered with Missouri;A. States of Arkansas, Tennessee, Kentucky, Illinois, and Iowa. B. Territories were Kansas and Nebraska and the land now known as Oklahoma was called an "unorganized" territory.
When Lincoln was elected president in 1860, his views on slavery were already known and included:
Doris Leistner has written: 'Crawford County, Indiana marriages, 1818-1860' -- subject(s): Genealogy, Marriage records 'Crawford County, Indiana 1860 census' -- subject(s): Census, 1860, Census, 8th, 1860, Genealogy, Registers of births
The official Republican Party platform for the election of 1860 included a promise not to interfere with slavery in the states, but opposed slavery in the territories. Abraham Lincoln was chosen as the candidate to represent the Party.