Answer:
1. Elected president in 1860 --- Abraham Lincoln
2. Southern candidate for president in 1860 --- John Breckinridge
3. First state to secede from the Union --- South Carolina
4. President of the Confederate States of America --- Jefferson Davis
5. State in which Confederation Convention was held --- Alabama
6. United States president at the time of the secession --- James Buchanan
Explanation:
1- In 1860 Lincoln secured his candidacy for the presidency of the United States by the Republican Party. Although he barely had support from the southern states, defenders of slavery, swept through the north and was appointed president in 1860.
2- The first National Democratic Convention of 1860 was suspended without agreeing to a candidate, but a second convention nominated Senator Stephen A. Douglas of Illinois as president. Douglas's support for the concept of popular sovereignty, which demanded that each individual territory decide on the state of slavery, aligned many southern Democrats. Southern Democrats, with the support of President Buchanan, held their own convention and nominated Kentucky Vice President John C. Breckinridge for president.
3- South Carolina was the first state to separate from the Union, on December 20, 1860, after the election of Abraham Lincoln, to found the Confederate States of America.
4- Jefferson Davis was an American politician and military (including Colonel of the Mississippi Rifles in the Mexican War); Senator from 1847 to 1851 and from 1857 to 1861; and U.S. Secretary of War from 1853 to 1857. When the Confederate States of America withdrew from the Union in 1861, Davis was named Provisional President of the new country, a post he maintained until the capitulation of the South after the Civil War.
5- The Confederation Convention took place in Montgomery, the capital of Alabama, on February 4, 1861.
6- James Buchanan was the 15th President of the United States, serving from 1857 to 1861. His government is criticized for his inaction against the division of the country that would cause the outbreak of the Civil War.