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.

The correct answer is D) an increase in the populations in the Midwestern and Western cities.

One of the effects of the Interstate Highway Act of 1957 was an increase in the populations in the Midwestern and Western cities.

The importance of the Highway Act of 1957 is that it allowed the construction of nearly 40,000 miles highway system in the United States, that spread throughout the nation. One of the effects of the Interstate Highway Act of 1957 was an increase in the populations in the Midwestern and Western cities. It created jobs for the construction of this vast system of highways, taxes help with the money for constructions and the new ways helped people to get to different parts of the countries in less time.  

zoom in on the bill of rights. the other side was just as divided: some antifederalists opposed the constitution only because it lacked a bill of rights, and others opposed it on other grounds and merely used the bill of rights as an excuse to campaign against it.

b. major john c. frémont led a rebellion called the bear flag revolt.

explanation:

during the bear flag revolt, from june to july 1846, a small group of american settlers in california rebelled against the mexican government and proclaimed california an independent republic. the republic was short-lived because soon after the bear flag was raised, the u.s. military began occupying california, which went on to join the union in 1850. the bear flag became the official state flag in 1911.