What is 4r principle in class 8?

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• Who will form the government why class 8?
• Why do we need a parliament class 8 notes?
• What is red data book class 8?
• What is universal adult franchise class 8?
• What is ryotwari system for class 8?
• What is reflection of light class 8?
• Why do we need judiciary class 8?
• What is parliamentary form of government class 8?
• What is resource conservation for class 8?
• What are the effects of force class 8?