Missouri Compromise line, 1820
36°30′N
A latitude used to divide land over slavery still outlines the southern edge of Oklahoma's panhandle.
In 1820, slavery was barred north of this line in the Louisiana Purchase, except in Missouri. Texas gave up its claims north of the line in 1850, helping create the strip that became Oklahoma's panhandle.
- Missouri Compromise, 1820; repealed 1854
- also the Missouri–Arkansas and Tennessee–Kentucky border
Read about Missouri Compromise line, 1820
United States lines
- Adams–Onís line, 1819 · 42°00′N
- Mason–Dixon line, 1767 · 39°43′N
- Pinckney's Treaty line, 1795 · 31°00′N
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