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 :)
There was a lot of public discussion in the States over the Constitution's ratification procedure. Nine of the thirteen State legislatures needed to ratify it in order for it to go into force; unanimity was not necessary.
First, three-fourths of state conventions or state legislatures must support each amendment. Getting many states to concur on a long-lasting amendment to the Constitution is exceedingly challenging.
However, it wouldn't be until 1790 that the Constitution would eventually be accepted and ratified by all states. Roadblocks included disagreements about the delegates' authority, anti-federalist phobias, and the absence of a Bill of Rights. However, the new administration's concessions and pledges ultimately resulted in a solution.
To learn more about ratification
brainly.com/question/28246915
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The U.S politicians and businessmen worried about the foreign nations controlled economic development so they supported open door policy
Answer:
Confucius made another impact on society by creating a school.The school educated young boys in the way of Confucianism and also taught them Calligraphy so many of the boys went on to becoming scholars.
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