Question

What was one effect of the Interstate Highway Act of 1957?

the emergence of the car as America’s main mode of transportation
the creation of speed limits as a result of increased highway accidents
the sluggish development of the airplane industry
an increase in the populations of midwestern and western cities
fewer jobs because the railroads lost business

Answer 1

A. the emergence of the car as America’s main mode of transportation

Step-by-step explanation:

plato

Answer 2

an increase in the populations of midwestern and western cities

Step-by-step explanation:

The construction of the Interstate Highway Network was authorized by the Federal Aid Highway Act of 1956, popularly known as the Interstate and Defense Highways Act of 1956.

It was a petition of the largest automobile manufacturers in the United States and promoted by President Dwight D. Eisenhower - influenced by his experiences as a young soldier crossing the United States in 1919 following the route of the Lincoln Highway and the knowledge of the motorway network German (Autobahnen) during World War II - as a necessary component of a national defense system. This would make possible a better displacement by land of troops and military supplies.