Comparative advantage I would think. Yep, Google-sensei confirmed it:) Comparative advantage is the answer.
Ellis Island was the hub for millions of immigrants coming into the United States. Ellis Island functioned as the the first stop for immigrants coming into the United States from 1892 until 1954. Ellis Island now serves as a museum of the long immigrant history of the United States.
Answer:
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The reasons that totalitarian states arose after WWI are many. The economy of many countries was shattered by the costly conflict (especially Germany, being forced to pay reparations), causing socialist and communist ideas to flourish. The scars on society left by the war allowed for embittered populations to be swayed by good orators that could play to the crowd's emotions; Hitler liked to appeal to a desire for revenge in the German people, for instance. Also, as mentioned before, new ideas spread during the war, many involving government, often causing factions to fight over a country, with one finally coming on top, usually led by a single, charismatic individual.
The development of agriculture occur circa around 8000-6000 years ago. It was a time where many nomadc population begin to settle in a place, thus effectively starting the civilization as we know now. it was a huge shift for humanity and it was probably one of the most important, if not the most important achievement in human history.
It was quickly accepted as the preferred food source by people living in settlements because it could be planned and organized, thus helping people reaching a balance easily and preventing them from being dependent from the results of hunt and gathering. it was a safe and sicure way to assure food for everyone.
Have a great day hope that helps