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Th Pale of Settlement Strictly defines where Jews are permitted to live, work, and travel. Zone set away from borders. Push factor, as Jews left for better opportunities.
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Anti-semitic riot, exact date unknown. Push factor, as Jews left, not wanting to be pushed against.
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Nicholas 1, a notable tyrant, comes to power. Push factor, as people fled from the tyrant for better lives. Exact date not found.
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Cholera reigns during most of this year, killing 3 million. Push factor, because people tried to escape the terrible conditions and destructive plagues.
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Immigrants come for a chance to find gold! Pull factor, as people like wealth and there was lots more to go round now.
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The peasants and serfs are set free and permitted to travel. Decrease factor, as more freedom means a reason to stay. Exact date not found.
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No one wanted to go to a war zone, or possibly get trapped in the middle! Strong anti factor!
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The Supreme Court in America rules that we must monitor and restrict immigration more. Anti factor. Exact date not found. AGAIN.
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The tyrannical ruler killed by a bomb that blew up his legs. What happened was, he got a bomb threat and got off his train, then a rebel threw a bomb at him. Slight push factor.
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Bolshevik Revolution. Push factor, people running from conflict.
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The great World War II, in which America and Russia were allies. Slight push/pull factor, due to increased cohesion in the face of war, travel may have been easier.
