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.
Abolition of slavery in the United States. The slave trade was abolished in the United States from 1 January 1808. However, some slaving continued on an illegal basis for the next fifty years. One popular subterfuge was to use whaling ships. The campaign to end slavery itself in the United States was long and bitter.