Translated into english with the help of Google.
1854: negociations between the President, democratic, and the members of Parliament of the South: the transcontinental railroad will pass by north but the new States will find the freedom of choice facing slavery. Abolitionists of North scandalized: creation of the republican Party, abolitionist, on the debris of the two old parties (whig and democrat) in North. Election of 1856: bad candidate at the republicans; success of the partisans of the compromise (in green) among the popular electorate, but only one State gained; bipolarisation acquired; geographical dualism between republican North and democratic South completed... James Buchanan (democratic) elected president.