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 was officially abolished in the United States in 1865 (by the enactment of the 13th Amendment to the Constitution), although many states abolished slavery for themselves at various dates between 1777 and 1864 and the transport of new slaves from Africa to the US was stopped as early as 1808. African American Slavery Quotes African American slavery existed in the United States from 1619 to 1965. 2  Slaves were brought in to help farm American crops, and the need for slavery only increased with the â¦.