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.
On Dec. 18, 1865, slavery ended in the United States. Secretary of State William Seward issued a statement verifying the ratification of the 13th Amendment to the U.S. Constitution making the end of slavery official eight months after the end of the Civil War.The amendment states:ecretary of State William Seward issued a statement verifying the ratification of the 13th Amendment to the U.S. Constitution making the end of slavery official eight months after the end of the Civil War.