The western front is the line of trenches in France where WW1 took place. ( British allied with France vs Germany)
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Adolf Hitler was the ruler of the German Nazi party. He ruled for 12 years (Approximately).
C and D are the best answers out of the bunch
The Democractic-Republican Party
Conversely, the Federalist Party was an early political party which supported a strong centralized government.
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The correct answer is A.
The human race was not originated in America. The first settlers were nomadic people from the Paleolithic era, who arrived in the continent approximately 15,000 years ago using the Beringia land bridge. This crossing was possible because the sea level had decreased abruptly after the Last Glacial Maximum. Today this piece of land has become the Bearing Strait, separating Siberia (Rusia) and Alaska (US).