29 jun 1956 ano - The Interstate Highway System

Descrição:

The creation of the Interstate Highway System is one of the most important innovations of the 20th century. Signed off by Dwight D. Eisenhower, the Interstate Highway System now stretches over 48,000 miles. The highway system has had a profound effect on American way of life, as transport and communications were drastically enhanced with its creation. Since its creation in 1956, about 500 billion dollars have been put into its highways.

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