Since you provide no picture , In the past, mongols was able to conquer almost all part of Asia and some part of eastern Europe.
So here are some territories that mongols did not conquer :
- Western Europe, such as France and England
- South East Asia , such as malaysia , Indonesia, Thailand
- Africa , such as Egypt
Well assuming you mean America, and not considering Civil War, I would say the draft of the Constitution Thomas Jefferson want to make slavery illegal, but he needed the southern states approval.
Franklin Delano Roosevelt
The southern colonies (and the colonies in the Caribbeans) required slave labor and indentured servants to maintain plantations that grew valuable crops such as sugar canes and tobacco. Harvesting these crops were often labor intensive that many free workers were unwilling to do without high wages that plantation owners did not wish to pay. These crops could only be grown in the south (or the Caribbean) due to the soil and climate.
