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Smithsonian Education: Establishing Borders: Expansion of Borders 1846 48

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This online lesson plan shows students through primary sources how the borders of the U.S. changed in just a few years. They are asked to analyze maps and use map skills. All maps and worksheets are included as well as additional resources.

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  • This resource is only available on an unencrypted HTTP website.It should be fine for general use, but don’t use it to share any personally identifiable information