showing only Military and Government definitions (show all 4 definitions) Note: We have 13 other definitions for FOIA in our Acronym Attic. new search; suggest new definition; Search for FOIA in Online Dictionary Encyclopedia
The Missouri Compromise of 1820 was important because it played a significant role in the relationship between the North and the South. It resulted in the admission of Missouri to the Union as a slave state.he Missouri Compromise of 1820 admitted Missouri as a slave state,  and Maine as a free state, to keep the balance of slave/non-slave  states equal in Congress.
The Missouri Compromise, as the first great Congressional compromise over the slavery issue, was also important as it set a precedent that Congress could regulate slavery in new territories and states. And that very issue would become a very important topic for debate decades later, especially in the 1850s.