Explain the reason why counties in west Texas have a different shape than those in east Texas?

The reason counties in East and West Texas have different shapes is because of the requirements outlined in the Constitution of 1876. It required that counties were at least 900 square miles and that they were in the shape of a square whenever possible. The majority of the counties in West Texas and near the panhandle are in the shape of squares because they were created after the Constitution of 1876 was written while those in East Texas have different shapes because they were created prior to the Constitution of 1876

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