score:5
Those territories were, at the time of the American Civil War (1861-1865), organized incorporated territories.
They were governed by the federal government directly, "with a measure of self-rule", but without the full "state" status, and as such not among the United States of America.
The Territory of Hawaii, for example, had this status from 1898 till 1959...
During the Civil War, some territories were controlled by the Union, while Confederate Arizona and the Indian Territory were claimed by the CSA.
Upvote:2
Apart from the 11 green States which seceded to form the Confederacy, there are three types of areas shaded pink or salmon: