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Gantt chart first used in 1890 by Karol Adamiecki, later to be popularized by Gantt in the 1910s.
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American Association of Cost Engineers was founded
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Dupont developed the critical path technique
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Department of Defense mandates a WBS for all projects
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International Project Management Association was founded
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Project Management Institute was founded
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Scrum was named a project management style
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Earned Value Management became prominent
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Agile Manifesto was created. Agile is now considered a project style