Today In History In 1833- Slavery Abolition Act passed in the British colonies In 1888- Granville T. Woods patents railway telegraphy In 1963- Martin Luther King Jr delivered his historic "I Have A Dream" speech during the March on Washington In 2008- Barack Obama becomes first African American to secure the nomination for President of the United States from a major political party In 2020- Death of Chadwick Boseman, iconic actor in Black Panther