What was one important thing that Abraham Lincoln did?

Accepted answers

freed the slaves (Emancipation Proclamation)
saved (or preserved) the Union
led the United States during the Civil War

Explanation

Lincoln freed the slaves, preserved the Union, and led the country during the Civil War.

The explanation is our own study note, not official wording.

Source: USCIS, 2008 version (USCIS Office of Citizenship, rev. 08/21)Verified Sep 14, 2026Official PDF

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