They weren't trying to gain independence from anyone.. it was a war amongst themselves about their different opinions towards slavery.
Through Civil War.
Algeria gained its independence from France after a long civil war in 1962.
Gain independence for Cuba.
The United States didn't gain any land during the Texas War of independence. It annexed Texas after it had won its independence and was a free nation.
the constitution and bill of right allowed US to gain independence from the UK during the revolutionary war these were signed in philladelphia
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The Confederacy's first goal during the Civil War was to gain independence from the northern states. The second goal was to establish a government that was free from what they deemed as northern oppression, and would not attempt to end slavery.
Independence, autonomy, self-determination, and the right to own slaves.
Great Britain
The focus of the Civil War was, originally, for the South, or the Confederates, to gain independence from the Union. Later in the war, the focus became to free the slaves in the South. This was caused by the Emancipation Proclamation.
France
It was during the Civil War because the north and south fought against each other. That is what the Civil War is. The Revolutionary War is America fighting against the British to gain their own freedom.