34:
20:
450:
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25:
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33:
434:
419:
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286:
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337:
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269:
218:
15:
371:
354:
303:
252:
19:
198:
This category has the following 12 subcategories, out of 12 total.
59:
65:
451:Buildings and structures completed in the 1820s
416:Transport infrastructure completed in the 1820s
8:
446:Infrastructure completed in the 19th century
441:Infrastructure by decade of completion
7:
412:
388:
364:
347:
330:
313:
296:
279:
262:
245:
228:
211:
200:
192:
14:
368:Infrastructure completed in 1829
351:Infrastructure completed in 1828
334:Infrastructure completed in 1827
317:Infrastructure completed in 1826
300:Infrastructure completed in 1825
283:Infrastructure completed in 1824
266:Infrastructure completed in 1823
249:Infrastructure completed in 1822
232:Infrastructure completed in 1821
215:Infrastructure completed in 1820
32:
18:
1:
392:Dams completed in the 1820s
467:
45:
26:Architecture portal
40:Engineering portal
56:completed in the
458:
421:
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126:
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64:
38:
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24:
17:
12:
11:
5:
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67:
66:
53:infrastructure
44:
43:
29:
13:
10:
9:
6:
4:
3:
2:
463:
452:
449:
447:
444:
442:
439:
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436:
417:
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393:
389:
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195:Subcategories
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27:
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95:
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51:
435:Categories
372:(1 C, 1 P)
355:(1 C, 1 P)
304:(1 C, 1 P)
287:(2 C, 1 P)
253:(1 C, 1 P)
236:(2 C, 1 P)
48:category
58:decade
50:is for
420:(16 C)
396:(2 C)
338:(1 C)
321:(1 C)
270:(1 C)
219:(1 C)
121:1870s
116:1860s
111:1850s
106:1840s
101:1830s
96:1820s
91:1810s
86:1800s
81:1790s
76:1780s
71:1770s
60:1820s
46:This
184:24th
179:23rd
174:22nd
169:21st
164:20th
158:19th
152:18th
147:17th
142:16th
137:15th
132:14th
204:0–9
437::
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370:
353:
336:
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285:
268:
251:
234:
217:
405:T
381:D
63:.
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