Six Flags Entertainment Corporation, or simply Six Flags, is an amusement park corporation based in the United States, with properties in the US, Canada, and Mexico.
There were 9 US presidents that had slaves at some time. These were George Washington, Thomas Jefferson, James Madison, Andrew Jackson, John Tyler, James K. Polk, Zachary Tayl â¦ or, Andrew Johnson, and Ulysses S. Grant.
The New York Times. Sally Hemings (1773-1835), was a slave at Thomas Jeffersonâs Monticello, pictured, and was the third presidentâs mistress, according to a DNA analysis in 1998. Hemings was the daughter of Elizabeth (Betty) Hemings and, allegedly, John Wayles, Thomas Jeffersonâs father-in-law.