In a capitalist society the prices of goods, services and labour are determined by supply and demand. If a lot of people want to buy a certain product its price will go up. Products that are mass produced usually have low prices. Another important feature of capitalism is competition.
The correct answer is D, domestication of animals. All other alternatives refer to events that only happened later.
In order to affirm an Agricultural Revolution ocurred, historians have to choose the most important changes and events that determine that from that moment onwards life was different.
The most important thing that supports the idea of an Agricultural Revolution is that humans started to domesticate plants and animals, which made possible for them to settle and stop being nomads.
This lead to the birth of cities and to radically change how those people lived.
One reason for the mass migration of many Irishto North America in the 19th century was <span>a series of crop failures
This is what sent them to North America in the 19th century.
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The main turning point is The Cuban Missile Crisis