Numerous reasons including:
1. Weak central government, all power in the hands of the state governments
2. Couldn't collect taxes
3. Couldn't regulate interstate commerce
4. Needed 9/13 to pass laws
5. Needed all 13 states to pass an amendment, difficult for everyone to agree
6. Couldn't raise an army
7. No President to run things
8. States didn't have to respect treaties of the central government
According to my knowledge this is the answer:
Rule of law is one of the most important pillar of Constitution.
Rule of Law is something which opposes common man's rule and supports Government's rule. This is actually necessary for maintaining peace and stability in democratic countries like India.
D. the Himalayan Mountains in Nepal
