B

(1) Lincoln came from a humble background, continuously improved his social status through personal struggle, and was eventually elected as the President of the United States, becoming a typical symbol of the "American Dream".

(2) Lincoln ranks among the "greatest Americans" in history, and his greatness is based on his outstanding leadership during the difficult years of the Civil War. He was courageous, dignified, and at the same time very humble, always staying close to ordinary people. He remained true to his fundamental goal—the preservation of the Union.

(3) Lincoln criticized slavery in the South from a humanitarian standpoint, but he was not a radical abolitionist who advocated the immediate abolition of slavery, the complete abolition of slavery, or the free abolition of slavery. As President, his focus was on maintaining the unity and unity of the "Union." When accepting the Republican nomination to run for the U.S. Senate in 1858, he warned: "A house divided in two cannot stand. I firmly believe that this government will not forever tolerate this kind of half-slavery, half-slavery, A house divided against itself cannot stand. I believe that this government cannot endure permanently half slave and half free." in 1861. In his inaugural address, the president called on the South to remember the "mysterious string" that held the Union together and not to secede.