Answer :
Final answer:
The need for an observation tower had the greatest effect on the design of the Empire State Building due to its role as a tourist attraction and marvel of architecture.
Explanation:
The factor that had the greatest effect on the design of the Empire State Building was the need for an observation tower. The building was constructed to serve as a tourist attraction, drawing visitors to its observation tower to marvel at the city view.
The use of steel and reinforced concrete revolutionized architecture, enabling skyscrapers like the Empire State Building to be constructed. The competition for height in building design also played a significant role.
The 1916 zoning law in New York influenced the building's design, leading to the iconic massing and style seen in structures like the Empire State Building.
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