The Importance of the constitution in a state

Define constitution. What is the importance of the constitution in a state? (Maximum 300 hundred words in one paragraph and must have references). 2. What is the importance of the 1987 Constitution preamble? (Maximum 300 hundred words in one paragraph and must have references).

3. Can constitution be changed? How? In your opinion, is there a need to change the existing constitution of the Philippines? Why or why not? (Maximum 300 hundred words in one paragraph and must have references).