How did the addition of roads and highways affect the U.S?

The addition of roads and highways significantly transformed the U.S. by facilitating faster transportation of goods and people, which boosted trade and economic growth. It enhanced connectivity between urban and rural areas, leading to suburban expansion and altering population distribution. Additionally, the interstate highway system improved national defense and emergency response capabilities, while also contributing to the rise of car culture and impacting the environment. Overall, these developments reshaped American society and its landscape.