111.The Interstate Highway System was authorized by the Federal Aid Highway Act of 1956.

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interstate
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highwaysystem
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authorized
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federalaidhighwayact
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transportation
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infrastructure
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roads
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highways
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construction
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engineering
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design
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planning
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funding
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government
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legislation
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congress
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president
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dwightd.eisenhower
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network
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connectivity
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mobility
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travel
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commerce
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trade
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industry
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economy
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growth
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development
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progress
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safety
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efficiency
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speed
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modern