Why was missouri's admission to american statehood in 1819 controversial?

Missouri’s admission to American statehood in 1819 was controversial because it raised question on whether slavery should be expanded westwards. Henry Clay proposed that slaveholders be prohibited from bringing new slaves to Missouri. The dispute was resolved through the Missouri Compromise that paired the admission of slave and free states

if you could provide the poem below, i'd be happy to you!

explanation:

you didn't give us the poem, or the title of the poem. but it is essential for you to give us that, otherwise we can not detect when the poem has a tonal shift!