Federal aid highway act allow the government to build new highways. A alloweD across the United States. B mostly in the eastern United States. C mostly in the western United States. D mostly in the southern United States

Option A, allowed across the United States, is the right answer.

Explanation:

Enacted on 29th June 1956 the Federal-Aid Highway Act was signed into law by Dwight D. Eisenhower, the then President of the United States. The act included the construction of the Interstate Highway System of 41,000 miles over a period of 10 years for $25 billion.

The Federal-Aid Highway Act was one of the most comprehensive public works project in the history of the United States. The main objective for constructing the highway was to eliminate unsafe roads, traffic jams and inefficient routes etc.