Respuesta :
For Apex, the correct answer on mine was "Pumping water out of the subway system"
Reinforcing bridges were built in the 1930s.
What is a reinforced bridge?
A bridge with reinforced concrete spans and concrete or reinforced-concrete abutments. Reinforced-concrete bridges may have various systems: beam (with simply supported or continuous beams), frame, arch, or combined. Beam-reinforced concrete bridges are the most common type.
When were steel bridges first built?
The year is 1838. The first iron bridge in the world is already several decades old; it opened in Shropshire, England, in 1781.
Learn more about Reinforcing bridges built in the 1930s at
https://brainly.com/question/1354488
#SPJ2