Final answer:
The chief outcome of the Transportation Revolution was the enhanced ability to move people and goods efficiently, spurring economic growth, promoting national expansion, and intertwining various regions of the United States.
Step-by-step explanation:
The most important result of the Transportation Revolution was the significant reduction in travel time and cost, which played a pivotal role in expanding the nation's economy and social fabric. By making it feasible to transport agricultural and manufactured goods efficiently across the country, the revolution enabled expansion into new territories and facilitated the growth of America's market system. It also connected rural areas with cities, increasing mobility for people and ideas, and reducing regional isolation.
With the introduction of the steam locomotive and the expansion of railroads, people could move goods and themselves faster and farther than ever before. Railroads were often considered the single most important change in transportation history. These advancements, accompanied by the development of steamboats and canals, constituted the framework that held the revolution together and propelled the United States into a new era of progress and unity.