The correct answer choice is (C). Emancipation Proclamation (1863) turned the war into a crusade against slavery, which the British people could not support.
The Emancipation Proclamation of 1863 was started by Lincoln. It caused the British government to change their state of neutrality. Due to this, the British government also wanted to win over its citizens by abolishing slavery.
Lincoln did not declare war and maintained the condition inside America as an internal dispute. And European countries didn't like to interfere in internal matters of other countries.
The American Civil War was because of the people's opposition to slavery, federal rights, receding economy and the election of Abraham Lincoln.
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