Which of the following describes the most important effect the tank had on World War I? The tank ended the use of trench warfare for defense. The tank caused the war to last longer by killing so many soldiers. The tank proved to be ineffective against bombs and guns. The tank increased the use of trench warfare in World War I.

the war in the pacific

explanation:

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the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.