What the Tenth Amendment is:
The powers not delegated to the United States by the constitution nor prohibited by it to the states, are reserved to the states respectively or to the people.
What it means and Why it Was Made:
The Tenth Amendment means that states have the power to do what they want to do unless the constitution says otherwise. It was included into the constitution to help explain the relationship between federal and state governments.
Slaughterhouse Cases- 1872
The Slaughterhouse cases was when Louisiana had a law that gave only one New Orleans company the special right to livestock production inside the city. The Supreme Court ended up weakening the fourteenth amendment and strengthened the states powers.
"Tenth Amendment." Constitutional Amendments: From Freedom of Speech to Flag Burning. 2nd ed. Vol. 2. Detroit: UXL, 2008. Gale Virtual Reference Library. Web. 10 Dec. 2015