Geography · Demographics and Human Geography
अनुमानित वैश्विक मानव जनसंख्या सबसे पहले किस शताब्दी में 1 अरब तक पहुंची थी?
- 119वीं शताब्दी✓
- 218वीं शताब्दी
- 317वीं शताब्दी
- 416वीं शताब्दी
सही उत्तर देखें
19वीं शताब्दी
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