Why was the pony express first needed, and why did it later become obsolete

Why did the south decide to fight a defensive war 1.to protect their plantations 2.to make the north look like the aggressor 3.to take advantage of their knowledge of the land 4.to make maximum use of the limited transport system

Poem: the barn how does frankau try to strip the glamour from war? what might the date of the poem have to do with the feelings it expressed ?

How many battles were confederate victories? (specifically: major battles)