For a long time, the U.S. Interstate Highway System was the longest in the world at over 46,000 miles, but its construction ...
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The US Interstate Highway System explained
Visit <a href="https://brilliant.org/mrbeat">https://brilliant.org/mrbeat</a> to get started learning STEM for free, and the ...
It’s been called the 51st state, a perpetual motion machine, a journey with no end. It is the world’s largest public-works project. In a nation divided by geography and politics, the United States ...
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