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.
13th Amendment. Slavery was finally officially ended in the United States by the passage of the 13th Amendment to the Constitution. Proposed in January of 1865 it was ratified by the required three-quarters of the states by December of that year.