Final answer:
Abraham Lincoln was nervous in 1864 due to the upcoming presidential election and the state of the war. He needed the war to get better for the Union because he believed it would lead to the end of slavery and the reunification of the country.
Step-by-step explanation:
Abraham Lincoln was nervous in 1864 because it was an election year and he was concerned about the outcome of the presidential election. He needed the war to get better for the Union because he believed that a Union victory would lead to the end of slavery and the reunification of the country.
Lincoln's nervousness in 1864 can be attributed to several factors. Firstly, the Union was facing significant casualties and setbacks in the war, and there was a growing sense of weariness among the American people. Secondly, the Democratic Party had nominated George McClellan, a former Union general, as their candidate for president, and he had a more moderate stance on the war and slavery. Lincoln feared that a McClellan presidency could result in a negotiated peace that would allow the Confederacy to maintain slavery and secede from the Union. Thirdly, Lincoln was unsure if he would be re-elected, as there was a strong anti-war sentiment among certain segments of the population.