Why did the conflict between the northern and southern states deepen as territories from the louisiana purchase apply for statehood?

The main conflict that North and Southern states were the questionable slavery and the laws of tariffs proposed. The southern wanted to continue the act of slavery, by continuing to important and use slaves. While the North had wanted to ban slavery. There was also conflict after the revolutionary war, that the people had a hard time living and had to steal in order to live.

the great wall of china worked as a defense for the feudal states of the zhou dynasty to the north. during the warring states period more walls were put up to defend the borders of the different kingdoms. it was semi successful because despite the wall, the mongols eventually conquered china also the great wall provided protection to the economic development and cultural progress, safeguarded the trading routes such as the silk road, and secured transmission of information and transportation. @jayxboof

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