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.
Martin Van Buren, William Henry Harrison, Andrew Johnson and Ulysses S. Grant all owned slaves but not during their time in office. James Madison, Jefferson's successor, held slaves all of his life including while he was in office.