It was proposed by US president Woodrow Wilson at the Paris Peace Conference after wwi and gained the support of other nations.
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The study of human society
The king would be a tyrant
Answer:
England and France
Explanation:
England and France were previously planning to support the Confederates, despite both nations abolishing slavery, for their own personnel gain. However after the US openly declared its opposition to slavery, the UK and France were not willing to oppose it because they had abolished slavery, England and France intervening could harm their reputation, England and France were afraid of a war with the US, and most of their citizens supported the Union.