It is a LONG list. https://en.wikipedia.org/wiki/List_of_destroyed_heritage
State Government. Under the Tenth Amendment to the U.S. Constitution, all powers not granted to the federal government are reserved for the states and the people. All state governments are modeled after the federal government and consist of three branches: executive, legislative, and judicial.
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In the mid-20th century, researchers dredging the seafloor could not find any materials older than <span>180 million years old.
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They do, They play a critical part in areas that the government cannot exclusively left to the government, also this allows people in different states to have a say in what goes on in their area, because all states have different laws and regulations.
Most slaves worked on Plantations