Final answer:
Between 1910 and 1930, there was a significant increase in US homes with electricity due to the efforts of corporations like Westinghouse and General Electric. This led to the growth in purchasing new consumer goods like stoves, washing machines, vacuum cleaners, and refrigerators.
Step-by-step explanation:
Between 1910 and 1930, the approximate increase in US homes with electricity was significant. Electrification of homes increased during this time period due to the efforts of corporations like Westinghouse and General Electric. As electrification increased, especially in urban areas, the purchasing of new consumer goods like stoves, washing machines, vacuum cleaners, and refrigerators also grew. By the end of the 1920s, over 1 million mechanical refrigerators were manufactured in the US.