Pearl Harbor was attacked by Japan on December 7, 1941. There were 2,400 fatalities and 18 ships damaged or sunk by the U.S. military. The United States' entry into World War II was its most significant result.
What is Geopolitics?
Geopolitics is the study of the effects of geography on the balance of power in international affairs. Around the turn of the 20th century, the Swedish political scientist Rudolf Kjellén first used the term "geopolitics," which expanded throughout Europe in the years between World Wars I and II (1918–39) before becoming widely used during the latter.
After World War II, geopolitical theory lost favor due to its links to imperialistic Japanese and Nazi German aggression as well as because the development of nuclear weapons and ballistic missiles diminished the importance of geographical variables in the global strategic balance of power.
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The answer is the third one
The Civil War began when the Confederates bombarded Union Soldiers at Fort Summer. And, yes, it did start from the different views from the South and North that came with President Lincoln.
It helped because it enabled other fronts to open up because the American Offensive in the area ended with a victory, which meant that they could move to other areas and bother Germans there. They didn't' do this however because the fighting ended since the Germans became aware of their losses and signed an armistice.
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