Engraving by
Thomas Clarkson in
The History of the
Rise, Progress, and
Accomplishment of
the African Slave
Trade, vol. 1, 1808.
Civil War portrait of Abraham
Lincoln; in the background is the
1863 Emancipation Proclamation,
which granted freedom to slaves
in states then in rebellion against
the Union. Slavery was finally
abolished by the 13th Amendment
to the Constitution in 1865.