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Organizations, places or other things founded or established in the decade
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290:States and territories established in the 820s
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329:Byzantine Empire under the Amorian dynasty
311:This list may not reflect recent changes
306:Pages in category "820s establishments"
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169:Category:820s disestablishments
341:Grand Prince of the Hungarians
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372:9th-century establishments
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382:Establishments by decade
353:Principality of Nitra
270:828 establishments
257:826 establishments
244:825 establishments
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366:Categories
324:Borobudur
294:(8 P)
274:(4 P)
261:(2 P)
248:(1 P)
235:(4 P)
222:(1 P)
209:(4 P)
196:(1 P)
387:820s
159:14th
154:13th
149:12th
144:11th
139:10th
96:870s
91:860s
86:850s
81:840s
76:830s
71:820s
66:810s
61:800s
56:790s
51:780s
46:770s
35:820s
185:0–9
133:9th
127:8th
122:7th
117:6th
112:5th
107:4th
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348:P
336:G
319:B
283:S
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