Unrestricted submarine warfare, which became prominent in World War I, meant that submarines could sink any time of vessel at any time without warning. Before this, they had to surface first and place crews on lifeboats.
Its main activity was to prevent labor disputes during the cause of the war and also ensure that higher wage settlements did not result in inflation.
During the 1800s and early 1900s various ethnic groups were restricted from immigrating. Mainly asian (and specifically chinese) people were discriminated against. The <u>Exclusion Act of 1882</u> is considered by many historians to be the first <u>explicit</u> exclusionary immigration restriction made to one particular nationality in its entirety. Immigration of chinese laborers was prohibited right then. This was largely the result of racial prejudice from the American people and their authorities.
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Answer:
Si, porque el nivel de revolución es cuando un grupo de personas se cansaron de la mala forma de vivir y quisieron liberarse, para eso se necesita causar daños
Un claro ejemplo de eso sería la revolución francesa
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