Answer: Option [A]The Silsako stone bridge of North Guwahati destroyed due to earthquake in the year 1897. Also, historically the bridge holds huge importance for the people of Assam as several invaders including Muhammed Bin Bukhtiyar used the Silsako Bridge to enter and invade the Kamrup town in modern Day Assam. The historical bridge was destroyed in a horrid earthquake that rattled Assam in 1897.