March 15, 1820

Maine was admitted as the 23rd state of the United States under the Missouri Compromise.


Washington, D.C., United States | U.S. Congress

Watercolor painting based depiction of Maine was admitted as the 23rd state of the United States under the Missouri Compromise. (1820)

Maine’s Admission as the 23rd State of the United States

On March 15, 1820, Maine was officially admitted to the United States as the 23rd state. This event was a significant milestone in American history, closely tied to the Missouri Compromise, a pivotal legislative agreement that addressed the contentious issue of slavery in the expanding nation.

Background

Before its statehood, Maine was part of the Commonwealth of Massachusetts. The region had been seeking independence from Massachusetts for several decades due to geographical, economic, and political differences. The push for statehood gained momentum in the early 19th century, as the population grew and the desire for self-governance increased.

The Missouri Compromise

The admission of Maine as a free state was intricately linked to the Missouri Compromise, a legislative effort to maintain the balance of power between free and slave states in the Union. The Compromise, enacted in 1820, was primarily driven by the following factors:

  • Balance of Power: At the time, the United States was composed of an equal number of free and slave states. The admission of Missouri as a slave state threatened to disrupt this balance.
  • Sectional Tensions: The debate over the expansion of slavery into new territories was intensifying, with Northern and Southern states deeply divided on the issue.

Key Provisions of the Missouri Compromise

  1. Maine’s Admission: Maine was admitted as a free state, ensuring that the number of free and slave states remained equal.
  2. Missouri’s Admission: Missouri was admitted as a slave state.
  3. 36°30’ Line: The Compromise established the 36°30’ parallel as the dividing line for future states. Territories north of this line, except Missouri, were to be free states, while those south could choose to permit slavery.

Significance and Aftermath

The Missouri Compromise was a temporary solution to the sectional conflicts over slavery. It maintained the balance of power in Congress and delayed the onset of more severe national conflicts over slavery. However, it also highlighted the deep divisions within the country, foreshadowing the intense debates and conflicts that would eventually lead to the Civil War.

Maine’s admission as a state was significant not only for its own residents, who gained political autonomy and representation, but also as a crucial element in the broader national struggle over slavery and state rights.

In summary, Maine’s statehood on March 15, 1820, under the Missouri Compromise, was a critical event in the United States’ history, reflecting the complex interplay of regional interests and the ongoing national debate over slavery.