फिल इन द ब्लैंक्स ऑफ फर्स्ट चैप्टर इन एसएस 8 स्टैंडर्ड नवयुग इंग्लिश मीडियम स्कूल
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- Census operations were held every ten years
- British established specialised institutions like archives and museums were also established to preserve important records .
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