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This category has the following 2 subcategories, out of 2 total.
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248:1820 in the United States by city
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283:19th-century years by city
197:Category:1820 by continent
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193:Category:1820 by country
224:1820 in Singapore
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191:See also:
48:category
228:(1 C)
183:1870s
178:1860s
173:1850s
168:1840s
163:1830s
157:1820s
151:1810s
146:1800s
141:1790s
136:1780s
131:1770s
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59:city
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56:by
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