One of the most prominent air combat fighters at the course of the second world war were the United States Air Force. In addition, the USAF has one of the latest bombing technology when it acquired the B-17 which are commonly used on bombing raids held at either day or night.
The reasons for the revolutions are many, but we can point out some as the form of government; Russia was one of the last major European countries where the monarchy was an autocrat, his power not limited by laws or institutions. Another fact was the total inefficient emperor and Tsar of all Russians, Nicholas II.
Also, the development of an "educated middle class", result of the industrial revolution in Russia, provided the social basis for the creation of a liberal political movement demanding political rights and constitutionalism.
Finally, the world war I was the central reason for the revolution and its outcome. Russia was completely unprepared military, industrially and politically. By the end, the empire had lost large and rich portions of land and millions of men. This chaotic scenario made the revolution inevitable. The generalized dissatisfaction forced Tsar Nicholas II to abdicate and created a vacuum of power that led the Soviet party to slowly take control of the Russian administration.
Re:PAC donate money to both candidates running for the same office?
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To get jobs in factories, down mines etc. The Agricultural Revolution had led to enclosures of land, which m eant that many people could no longer earn a living from the country. The small farms that used to support most people were replaced by large farms belonging to a smaller number of landowners. The small farmers were driven out to look for work elsewhere. Some of them became farm labourers, working for the big farmers instead of running their own small farms. Others went to the towns.
The industrial revolution brought about a massive change in the way people worked for everyone, not just the small farmers. Prior to the revolution, most people worked in or near their own homes. Crafts like spinning, weaving, pottery etc were carried out at home, not in factories. Whole families tended to be involved in whatever the family enterprise might be. The Industrial Revolution obliged people to go and work in factories instead of working at home. The home and the workplace had become irrevocably seperate. People no longer worked for themselves, but for other people.