Final answer:
Lincoln's victory in the 1860 election was considered a decisive victory but a sectional one, as it united the nation in some ways but also highlighted sectional tensions.
Step-by-step explanation:
The 1860 election of Abraham Lincoln was considered a decisive victory but a sectional one. Lincoln's support was concentrated in specific regions, highlighting sectional tensions. This means that although Lincoln's victory united the nation in some ways, it also exposed and heightened the divisions between different regions of the country.