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Abraham Lincoln: Facts, Birthday & Assassination | HISTORY
Biography of Abraham Lincoln, 16th U.S. President - ThoughtCo
Abraham Lincoln, Biography, 16th President of the United States
Sixteenth Amendment to the United States Constitution
SIXTEENTH | definition in the Cambridge English Dictionary
Abraham Lincoln | The White House
Sixteenth Amendment | Definition, Summary, & Facts | Britannica
SIXTEENTH definition and meaning | Collins English Dictionary
16th - definition of 16th by The Free Dictionary
16th century - Wikipedia