What is the relationship between lincoln's proclamation and the 13th amendment?

Explanation:

President Abraham Lincoln issued the Emancipation Proclamation as an executive order on January 1, 1863. The executive order declared freedom for slaves in  ten Confederate states in rebellion against the Union.  It also allowed that freed slaves could join the Union Army to fight for the cause of reuniting the nation and ending slavery.  As summarized by the Historical Society of Pennsylvania, "The Proclamation broadened the goals of the Union war effort; it made the eradication of slavery into an explicit Union goal, in addition to the reuniting of the country."  While Lincoln personally was strongly against slavery, he had to tread carefully in his role as president and commander-in-chief.  The Emancipation Proclamation was carefully worded in order to retain the support of four border slave states, which remained in the Union though they were states that permitted slavery, were  Maryland, Missouri, Delaware, and Kentucky.   Lincoln wanted to keep those states loyal to the Union cause.

The 13th Amendment was added to the US Constitution in 1865.  It made slavery illegal in all states.

Here's what the 13th Amendment said:

d.

the northwest territory became the most densely populated area in the u.s.