You mean what is hat with an X?
The U.S. Confederation Congress decided in 1787 that the Northwest Territory would eventually become "new states in the Union," since this was the first time the Us government had ever designated land for such a purpose.
The Lincoln–Douglas debates (also known as The Great Debates of 1858) were a series of seven debates between Abraham Lincoln, the Republican candidate for the United States Senate from Illinois, and incumbent Senator Stephen Douglas, the Democratic Party candidate.