The development that made travel between states faster and easier is B. Highway system.
What is the highway system?
The United States highway system is the 41,000 miles of Interstate and Defense Highways that provide a high-speed, high-capacity system of highways without stoplights and well-spaced exits that connect other state roads.
The development of the highway system eliminated the following transportation bottlenecks:
- Unsafe roads
- Inefficient routes
- Traffic jams
- Delayed interstate travels.
The highway system also facilitated new towns to develop along the routes.
Thus, the development that made travel between states faster and easier was not electricity, Roman bathhouses, or telephones, but the highway system.
Learn more about the Highway System at https://brainly.com/question/1071443
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