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This region contains lost rivers, sinkholes, and caves.

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This is the region where Indianapolis and Terre Haute are located.

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This region has many lakes, dunes, and wetlands.

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This region was flattened by glaciers and contains fertile soil good for growing crops.

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This region contains a large amount of coal, oil, and limestone.

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Fort Wayne, South Bend, and Gary are located in this region.

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The Indianapolis Motor Speedway, Wabash River, and highest point in the state are located in this region.

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Two important industries in this region are steel and manufacturing.

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This region is the location of Indiana University and Abraham Lincoln's childhood home.

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Agriculture and automobiles are important industries in this region.

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This region contains piles of rocks that glaciers pushed into hills.

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Evansville and Bloomington are located in this region.

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This region was once covered by ocean plants and animals forming limestone.

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Till plains, river valleys, hills, lakes, and rivers cover this region.