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.
George Washington, the first President of the United States, held people in slavery for virtually all of his life. His will provided for freeing the enslaved people he held upon the death of his widow Martha Washington. In January 1801 Martha freed her husband's slaves, just over a year after his death.