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Steel made it possible to build Skyscrapers. Answer "construction of skyscrapers"
New technologies have helped people build taller and taller structures. Steel is one such invention. For a buildingto be so tall, the walls at its base had to be larger to support all the extra weight. But, archetecture changed when steel was invented in the 1860s. Steel is a strong, lightweight metal made by adding carbon to iron. With the invention of steel, people were able to make a strong framework that could make modern skyscrapers possible.
skyscrapers
Supportive steel frames were developed .
STEEL! Elevators Telephones Efficient pumps
The effect of steel is that it strengthens structures especially the weak ones.
Steel made it possible to build Skyscrapers. Answer "construction of skyscrapers"
Steel
Steel.
New technologies have helped people build taller and taller structures. Steel is one such invention. For a buildingto be so tall, the walls at its base had to be larger to support all the extra weight. But, archetecture changed when steel was invented in the 1860s. Steel is a strong, lightweight metal made by adding carbon to iron. With the invention of steel, people were able to make a strong framework that could make modern skyscrapers possible.
Concrete and steel.
Basically steel, concrete and glass
skyscrapers
The invention of steel skeletons and elevators made building skyscrapers possible
Supportive steel frames were developed .
Steel was the primary thing needed to build skyscrapers. The next one was elevators were needed to get above 3-4 floors and finally equipment to left and move the steel.
Skyscrapers are very strongly build structures and so can withstand all but the worst of natural disasters.