context: This house was built in 1866 when Sultan Sayyid Majid bin Said decided to establish a new residence in the country after exhausting life in Zanzibar and called the new house "Dar es Salaam" - "a peace, quiet" house. The Sultan's palace was built along with other buildings and the Old Kingdom of today was the Sultan's reception house.
question: How old is the old government?
answers.text: was built in 1866