Answer:
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 :)
Answer:
Narrator: The success of large speculators like Livermore and Durant lured smaller investors to Wall Street, but Charles Mitchell, president of National City Bank, virtually invented the idea of mass-marketing stocks and bonds to the general public. This was a totally new idea and a huge success.
Columbus was originally going to sail along the West African coast and around the Cape of Good Hope. But than Columbus had the idea of instead to sail west across the Atlantic instead of around the gigantic African continent.
The cattle boom led to economic prosperity for the rise, growth, and development of new towns in the west resulting to the development of service businesses, for example, hotels, salons, e.t.c. The cattle were bought cheap and resold at high prices which allowed the ranchers to make a lot of money (profit).
