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Many U.S. states look like perfect rectangles, but the reason goes back to how America expanded westward. The original 13 colonies had detailed, irregular borders that developed over time, yet after the Louisiana Purchase the government began dividing sparsely populated land into square grids through the public land survey system.

That system made it much easier to draw new state borders as straight lines, which is why so many states in the Midwest and West look so geometric compared with Europe’s older, more detailed borders. The video also points out a few exceptions, including Texas keeping its old border and Washington following the Columbia River.

This is a short geography and U.S. history explainer that connects map design, westward expansion, state borders, and the logic behind American land surveys. If you enjoy educational map videos, geography facts, U.S. history, or simple explainers about why states have unusual shapes, this one breaks it down clearly.

SEO: U.S. state borders, why states are rectangles, public land survey system, American geography, westward expansion, Louisiana Purchase, map explanation, geography explainer, U.S. history video, state shape facts, educational history and geography content.

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Transcript
00:00Why are so many U.S. states perfect rectangles?
00:03When you compare the U.S. to Europe, you can clearly see that European borders are very detailed,
00:08while many American states are just straight lines stretching for hundreds of kilometers.
00:13So why is that?
00:14In order to understand, we have to go back to the beginning of U.S. history.
00:18The original 13 colonies had detailed borders as they developed over hundreds of years,
00:23and even several of the newly acquired states had irregular borders as well.
00:27But everything changed after the Louisiana Purchase and the subsequent expansion westward.
00:32The land was sparsely populated and the government largely ignored indigenous territories when drawing borders.
00:38So, in order to distribute the land to people, they created the Public Land Survey System,
00:44basically dividing the land into square grids.
00:46This also made it much easier to draw many of the new state borders as simple rectangles.
00:51However, there are exceptions, such as Texas keeping its old border or Washington following the Columbia River.
00:57So which state do you think has the weirdest shape?

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