Key Concepts in History

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Invention

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The creation of a new device or process.

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Innovation

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The introduction of new ideas, methods, or products.

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Technology

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The application of scientific knowledge for practical purposes.

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Wheel

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A circular object that enables movement or transportation.

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Telephone

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A device that converts sound into electrical signals for communication.

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Steam Engine

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A machine that converts steam energy into mechanical work.

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Civilization

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A complex human society with its own social organization and culture.

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Primary Source

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An original document or firsthand account of an event.

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Secondary Source

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A document or recording that relates or discusses information originally presented elsewhere.

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Origin

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The point or place where something begins or is created.