However, if we had to point to a particular moment, we might point towards 1920, as this was the year in which more Americans were living in cities than in the countryside for the first time. One of the innovations that had the greatest influence on this shift was the introduction of the assembly line.
1910. We can see that from the 50/50 split in 1900 to a 32/68 split in 1910, the statistical displacement says that 1910 was at least the year by which our nation had become an industrial nation. This shift was most directly influenced by by the trans-country communication such as telegraphs, Morse code, the telephone, transatlantic cables, etc. This allowed corporations to communicate faster and therefore grow at more rapid rate, allowing for the need of thousands of white collar jobs and industrial employment for young, single women and, unfortunately, children.
Explanation:
If you have an AMSCO US History book, pages 327-328 will help with this question.
The answer should be: Companies replaced hand-operated brakes with air brakes on trains.
Explanation:
You have to think how hard it was for trains to stop with hand operated brakes. Trains go fast, and not stopping in time can be dangerous. Hope this helped :)
