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.
1 Treatment in U.S.  This is a list of Presidents of the United States who owned slaves. Slavery in the United States was legal from its beginning as a nation, having been practiced in British North America from early colonial days.