Extension of slavery into western territories greatly contributed to the Civil War by creating a separation of political power between the North and South, and by dividing congress through deciding whether new territories accept slavery or not.
In 1945 the U.S. started to become aware of a new idea called Manifest Destiny, which encouraged expansion of the U.S. westward to create new territories, and eventually states. While this helped drastically to shape the modern day U.S., it also tipped the scale…
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