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269:1820 in the United States by state or territory
64:is for topics specifically related to the year
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228:(15 P)
248:(3 P)
197:1870s
192:1860s
187:1850s
182:1840s
177:1830s
171:1820s
165:1810s
160:1800s
155:1790s
150:1780s
145:1770s
60:This
134:1825
129:1824
124:1823
119:1822
114:1821
109:1820
104:1819
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73:Ohio
67:1820
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