Why did the Sectional Crisis transform into a national one? Must be 5- 7 sentences! I will give Brainliest to the first person!

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By 1820, preserving the balance of free states and slave states would be seen as an issue of national security.New pressures challenging the delicate balance again arose in the West. The Louisiana Purchase of 1803 more than doubled the size of the United States. Questions immediately arose as to whether these lands would be made slave or free. Complicating matters further was the rapid expansion of plantation slavery fueled by the invention of the cotton gin in 1793. Yet even with the booming cotton economy, many Americans, including Thomas Jefferson, believed that slavery was a temporary institution and would soon die out

Explanation: is this okay sorry if wrong pls don’t be wrong

question 10: the answer is c, to their constituents address a problem.

question 11: i think it would be domestic bills, which deal with american issues only and public bills, which affect the whole nation.

the answer should be monarchy