Missouri was not added to the union in 1818 primarily due to the contentious debate over the expansion of slavery. The proposal to admit Missouri as a slave state sparked significant opposition from northern lawmakers, which led to a national crisis regarding the balance of free and slave states. This conflict ultimately resulted in the Missouri Compromise of 1820, which allowed Missouri to enter as a slave state while Maine was admitted as a free state, maintaining the balance in Congress.
Illinois became a state in 1818.
illinois
Maine and Missouri
Maine and Missouri
Missouri itself.
Missouri
In a nutshell: Present-day Missouri was once part of the Missouri Territory. The eastern and southern borders of today's Missouri coincided with those of the Missouri Territory. In 1818, Missouri requested admittance to the Union, and the northern and western borders were drawn at pre-selected lines of latitude and longitude. At the time, present-day northwestern Missouri was not included in the state's borders. Then, the Platte Purchase of 1836 added the northwestern area to the state.
Maine
Missouri and Maine
a star would be added to the u.s. flag for every state admitted to the union
Illinois received statehood on December 3, 1818. It was the 21st state to be admitted to the Union.
Maine and Missouri