A catalytic converter is a device that uses a catalyst to convert three harmful compounds in car exhaust into harmless compounds. The three harmful compounds are: 1  Hydrocarbons (in the form of unburned gasoline).
Answers.comÂ® is making the world better one answer at a time. Slavery ended permanently in Louisiana in 1865. The end of slavery was a direct result of the passage of the Thirteenth Amendment to the Constitution.
Slavery ended in the United States 6 months after the civil war with the 13th Amendment. December 6, 1865. In the US, slavery ended in December of 1865 when the 13th Amendment was ratified. The Blacks were officially freed from slavery by the Thirteenth Amendment, passed by the Senate on Apr. 8, 1864, passed by the House on Jan.31,1865 and proclaimed as adopted on Dec. 6,1865.