What was the importance of the federal highway act of 1956?

The Federal-Aid Highway Act of 1956. It took several years of wrangling, but a new Federal-Aid Highway Act passed in June 1956. The law authorized the construction of a 41,000-mile network of interstate highways that would span the nation. It also allocated $26 billion to pay for them.

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what the first or next guy says

the us constitution is a living document, meaning that it can be changed over time as the country changes.