yes
they could trade to the Indians and to the Spanish but Spain would not let trade go through for the Americans only during the civil war.
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.
Vicksburg. There was one more Southern-held river-garrison, Port Hudson, which fell soon afterwards, but it could not really be described as a stronghold.
Albert Sidney Johnston was important because he raised the Army of Mississippi to defend Confederate lines from the Mississippi River to Kentucky.
Vermont and New Hampshire
new york and connetcut
The Mason-Dixon line
Tennessee borders Arkansas. The two states are separated by the Mississippi River.
The states of Victoria and New South Wales are separated by the Murray River. This forms the border for much of the way.
The Mississippi River separated Texas, Louisiana, Arkansas, and Indian Territory from the rest of the Confederate states.
The Mississippi River.
Fort Donelson
The Rubicon river separated Italy and Gual.
You are probably thinking of the Mississippi river.
The Ohio river was important during the civil war. Since most of the states south of the river were slave states and most of the north states were free, many slave crossed the river to try and get freedom.The Tennessee river was a central component of one of the world's greatest irrigation and hydropower systems and a major waterway of the southeastern United States.
One of them was the James River.