Monaco

The planet's second-smallest nation by area (after Vatican City), has the world's shortest constitution. Adopted in 1962 during the reign of Prince Rainier III, the governing document of Monaco currently clocks in at 3,814 words, according to the Comparative Constitutions Project (CCP).
Hope it helps...

Smallest Constitution in the World

There are many countries in the world that have a small constitution. However, the country with the smallest constitution in the world is Japan. The constitution of Japan is also known as the "Constitution of Japan" or "Postwar Constitution."

Features of the Japanese Constitution
The Japanese Constitution has the following features:

1. Length: The Japanese Constitution is the shortest constitution in the world, with only 4,000 words.

2. Concept: It is a modern and democratic constitution that was adopted on November 3, 1946.

3. Content: It consists of a Preamble and 103 articles divided into 11 chapters.

4. Amendments: The Japanese Constitution has not been amended since its adoption.

5. Fundamental Rights: The Constitution of Japan guarantees fundamental human rights such as the freedom of speech, religion, assembly, and association.

6. Separation of Powers: The Constitution of Japan provides for a system of separation of powers between the legislative, executive, and judicial branches of government.

7. Emperor: The Constitution of Japan recognizes the Emperor as the symbol of the State and the unity of the people.

Conclusion
In conclusion, the Constitution of Japan is the smallest constitution in the world with only 4,000 words. Despite its small size, it is a modern and democratic constitution that guarantees fundamental human rights and provides for a system of separation of powers.