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.
Texas is often considered to be the last state to have officially ended slavery on June 19th 1865, which became known as Juneteenth.. However, although Juneteenth commemoraâ¦tes the ending of slavery in the U.S., the state of Mississippi didn't ratify (to make it official) the 13th amendment until 1995.