Final answer:
Project management before the 1980s emphasized timelines, costs, and resources for management in specific industries, requiring a blend of technical and social structure understanding.
Step-by-step explanation:
Until the 1980s, project management primarily focused on providing timeline, cost, and resource data to top management in the military, computer, and construction industries. In those days, project management was essential for planning large-scale engineering projects, which often required significant commitments from governments for funds, labor, and materials. These projects necessitated understanding the social structures of the times to obtain necessary resources, as well as comprehending the capabilities of the workforce involved.
Project management evolved to include not only the technical aspects but also an understanding of social systems and large bureaucracies. This would ultimately lead to the successful completion of projects such as large dams, cathedrals, and military infrastructure, which were all critical in the evolution of civilizations and the development of modern project management practices.