The idea that a country or region should specialise in making and exporting goods and services that it can produce most efficiently.
Answer:
The Reagan Revolution basically refers to the dramatic changes in American politics, economics, and society that took place under the Reagan Administration between 1980 and 1989. The term sometimes connotes the early years of his presidency, but in reality, the Reagan Revolution lasted between 1981 and 1989, the years he served as the 40th President of the United States. The term Reagan Revolution is also often used synonymously with the term Reagan Era. This was a time when political conservatism was in full bloom. I think this is the revolution he is referring to.
Your answer is D. The German Army went through Belgium and made America get involved
Weather will be the primary reason. Despite its huge size. the real habitable area is probably less than 10% of its geographical size. Even Southern Ontario is deemed by many I know to be "too cold to live". 90% of Ontario and Quebec are simply inhabitable. I also personally think the entire Manitoba and Saskachewan are not suitable for human habitation unless we can create a way to simply hibernate during the 6 month winter (why there are so few people in Montana and North Dakota?) The fact that Montreal are thrive as a vibrant metropolis is already sort of a miracle and we don't see many such large cities with such severe weather. The only other case I can think of is probably Moscow.
Children Had to Work
many people lost their Jobs because of new machines
Therefore they Had to move to the big cities to find work in the new factories where they Had to do monotonous and Boring Work(e.g. Control the machines)
This Work was badly paid
The cities were dirty and the Apartments often very small
But
New machines that Made Life easier ( staem engines)