March 23, 1873 – Slavery abolished in Puerto Rico.
March 24, 1837 – Canada gives African American citizens the right to vote.
March 25, 1843 – Explorer Jacob Dodson sets out in search of the Northwest Passage.
March 26, 1872 – Thomas J. Martin patents fire extinguisher. 1911 – William H. Lewis becomes U.S. assistant attorney general.
March 27, 1930 – Of the 116,000 African Americans in professional positions, more than two-thirds were teachers or ministers.
March 28, 1870 – Jonathan S. Wright becomes first black state Supreme Court justice in South Carolina.
March 29, 1898 – W.J. Ballow patents combined hat rack and table.
