Why did Europeans suddenly need to buy slaves from Africa?

The nineteenth century saw immense changes in Africa. Some were driven by famine and disease. Some changes were the result of the territorial ambitions of African rulers. As the century prog

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Explanation:

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Explanation:

¨The Tell-Tale Heart" title is a reference to the sound of the old mans heart beating after he murders him. This means that the narrator feels guilty and his conscience makes him turn himself in