How did the daily life of many Americans change as the country improved its infrastructure? Responses Many Americans in the Midwest became more isolated as they no longer traded and bartered with neighbors. Many Americans in the Midwest became more isolated as they no longer traded and bartered with neighbors. The middle class steadily diminished as the range of consumer choice became narrower. The middle class steadily diminished as the range of consumer choice became narrower. Children no longer had to work due to new innovations. Children no longer had to work due to new innovations. As the cost of transportation decreased, the diversity of goods available for purchase increased