The United States through the Louisiana Purchase.
Louisiana
In 1874, the US States, formerly Confederate ones, were in control of Louisiana, Mississippi and South Carolina.
Because Texas was considered a secondary front, with no primary strategic objective and therefore it was less concerned by military operations, especially after the Union gained the control of the Mississippi River.
After the Union gained complete control of the Mississippi River with the capture of Vicksburg, the Confederate states of Texas, Louisiana, and Arkansas were cut off from the rest of the Confederacy.
Mississippi was a southern state that joined the Confederate States of America.
Mississippi, Louisiana, Alabama
United States District Court for the Southern District of Mississippi was created on 1838-06-18.
The goal of the plan was to isolate and separate the Southern States while at the same time gaining control of the Mississippi and the Atlantic Coast.
Mississippi
They are all southern states.
The southern states were the Confederacy. All the states from Virginia down to Texas, Florida, Mississippi etc. were in the Confederacy.