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 :)
What are the answer choices?
Adam Smith is considered to be the key figure of the Scottish Enlightenment, economist, philosopher and author, the pioneer of political econony, laid the foundations of the free market economic theory, also known as the "Father of Economy". One of his most famous works is "Wealth of Nations". The key ideas of this work are the economic free market program, where everyone has the opportunity based on the division of labor, the achievement of wealth and prosperity growth. Also, the key ideas were to minimize the role of government intervention and taxation on free markets, as well as the idea of an invisible hand that leads supply and demand. It can be said that Smith laid the foundations of a modern economy.
The answer is: C.
Answer:
You will find what you need at this link!
https://courses.lumenlearning.com/suny-ushistory1ay/chapter/life-and-culture-in-the-west/
Explanation: