What significant aspect influenced Chicago's architecture following the Great Fire of 1871?

The significant aspect that influenced Chicago's architecture following the Great Fire of 1871 was the advancements in steel-frame construction. After the fire ravaged much of the city, architects and builders sought innovative solutions for rebuilding. The introduction of steel-frame construction allowed for taller and more robust buildings, as steel provided a strong material that could support greater heights and withstand the risk of future disasters.

This shift toward steel-frame construction led to the development of the modern skyscraper, fundamentally changing the skyline of Chicago and influencing architectural practices globally. The ability to construct taller structures not only revolutionized the aesthetic possibilities of buildings but also represented a new era in urban development, where space-efficient designs could accommodate a growing population and economic activity. This advancement marked a defining moment in architectural history, distinguishing Chicago as a leader in the evolution of modern architecture.