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This category has the following 18 subcategories, out of 18 total.
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218:1820s disestablishments in Oceania
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235:1820s establishments in Oceania
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567:19th century in Oceania
194:1820s crimes in Oceania
508:1820s in New Zealand
562:Decades in Oceania
557:1820s by continent
436:1820s in Australia
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484:1820s in Hawaii
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327:1824 in Oceania
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532:1820s in Tonga
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40:History portal
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460:1820s in Fiji
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512:(12 C, 3 P)
551:Categories
464:(2 C, 2 P)
382:(3 C, 1 P)
365:(5 C, 1 P)
440:(13 C)
239:(14 C)
536:(1 C)
488:(7 C)
416:(3 C)
399:(4 C)
348:(4 C)
331:(4 C)
314:(5 C)
297:(4 C)
280:(3 C)
263:(5 C)
222:(2 C)
198:(2 C)
101:1870s
96:1860s
91:1850s
86:1840s
81:1830s
76:1820s
71:1810s
66:1800s
61:1790s
56:1780s
51:1770s
164:24th
159:23rd
154:22nd
149:21st
144:20th
138:19th
132:18th
127:17th
122:16th
117:15th
112:14th
248:0–9
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497:N
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425:A
207:/
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