Final answer:
The Ismaili Constitution was signed in 1986, providing guidance on community affairs for Ismaili Muslims globally, harmonizing with local laws.
Step-by-step explanation:
The Ismaili Constitution was signed in the year 1986. This constitution serves as a governance document for the Ismaili Muslim community worldwide. It was established by Karim al-Hussayni, the Aga Khan IV, who is the hereditary Imam (spiritual leader) of the community. The Ismaili Constitution sets out the principles for the conduct of community affairs in harmony with the countries' laws where Ismailis reside.