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.
William Henry Harrison and Martin Van Buren had both owned slaves earlier in their lives, but (like Buchanan) did not own slaves during their presidencies. Of the Presidents serving after 1860, only two had been slaveowners.