NEW YORK , United States (AFP) — Two documents signed by Abraham Lincoln in his drive to abolish slavery in 19th century America go on auction next week, expected to fetch up to $5 million. Limited edition copies of the Emancipation Proclamation delivered on January 1, 1863 and the 13th Amendment, which abolished slavery two years later, were issued by the man whom many still consider the greatest US president. Sotheby’s, which is conducting the […]