No; this war had no other allies. The Union had only itself and the Confederacy only had itself. European countries refused to take part in the war on either side because they had already abolished slavery, so it would've been like re-fighting an already resolved issue.
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First, the term 'America' refers to the entire western hemisphere. 'America' includes the continents of North America and South America. During the Civil War, the United States of America continued to exist. The North was referred to as the 'Union' and the South was referred to as the 'Confederacy.' The United States of America refused to recognize any right of a state to secede from the Union, and thus did not recognize the Confederacy.
The Union Navy blockade prevented them from exporting their cotton. And after the Emancipation Proclamation, Union troops were licensed to free any slaves they came across, so the planters were robbed of about half their workforce.
During the American Civil War, the Confederacy's initial military plan was a simple but enviable one: to defend its territory from Union incursions. Not needing to invade the Union in order to survive, the Confederacy only needed to parry any attacks that the Union might make against it.
The Confederate States of America (never officially recognised by any other nation) and the rest of the United States, normally referred-to as the Union during the course of the war.
Women during the civil war could not have any jobs unless they were slaves and/or being in the house taking care of their children.