Steel
The invention that made life in the suburbs possible was the invention of automobiles.
The invention that made life in the suburbs possible was the invention of automobiles.
The transistor
sky scraper
the oil cup
Suspension bridges are one of the oldest engineering forms, dating back to the 4th century. Modern suspension bridges were made possible by the web truss, invented by John Augustus Roebling. The web truss made a very sturdy, rigid structure that could withstand storms, wind forces, and heavy loads.
strong steel made it possible to build skyscrapers and suspension bridges
Electricity powered homes and factories. How did electricity change Americans' lives?
The invention that made life in the suburbs possible was the invention of automobiles.
The invention that made life in the suburbs possible was the invention of automobiles.
the turnpike was the invention that made the growth of railroads possible
Suspension bridges are built to make use of tension, whereas most other types of bridges make use of compression to bear their load. Suspension bridges are usually designed with the deck suspended below a series of towers by cables. Other types of bridges are generally either designed with the deck being supported from below by pillars, or made up of an arch.
They were great engineers. They were the ones who made the construction of the first suspension bridges.
Invention of a microscope made it possible to see cells for the fist time.
The invention of the microscope
microchip
The transistor