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Draw the Fischer projection for the open-chain form of D-erythrose.
Empires
Extensive groups of states or countries ruled over by a single monarch, an oligarchy, or a sovereign state.
Nations
Nations are large groups of people who share a common identity, history, culture, or language, often possessing or seeking their own government and territory.
Free Labor Ideology
The belief that labor should be conducted freely and characterized by a fair exchange of work for wages, underpinning much of the anti-slavery movement in the United States before the Civil War.
Slave Labor
The coerced labor of enslaved individuals, without pay or personal freedom, used historically in various societies and economies worldwide.
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