Those factors were:
city-states
the drawing of political borders
divide and rule policies
Answer:
By showing that he wanted to increase Germany's overall land mass and reach. Foreshadowing his thirst for more power.
Explanation:
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The correct answer is the Berlin Wall.
The Berlin Wall was built in 1961 in order to separate West Berlin, which was controlled by the US, France, and Great Britain, from East Berlin (which was controlled by the Soviet Union). This wall split up families and became a significant piece of symbolism during the Cold War era. This wall symbolized the stark differences between the United States and Soviet Union on how a society should be run, as East and West Berlin were run in two completely different ways.