What would be the best title for the image above?

This event, in 1803, nearly doubled the size of the United States.

Art. 5. There shall be formed in the said territory, not less than three nor more than five States...

Art. 6. There shall be neither slavery nor involuntary servitude in the said territory, otherwise than in the punishment of crimes whereof the party shall have been duly convicted: Provided, always, That any person escaping into the same, from whom labor or service is lawfully claimed in any one of the original States, such fugitive may be lawfully reclaimed and conveyed to the person claiming his or her labor or service as aforesaid.

Which of these is required of a U.S. territory in order for it to become a U.S. state?

The Northwest Ordinance established guidelines for the orderly expansion of the United States by instituting a-