Venice’s failed war against Constantinople led to the first bond market

The city of Venice's failed war against Constantinople in the 12th century led to the establishment of the first bond market. The city's need to finance its military campaigns and replenish its depleted treasury led to the creation of a new financial instrument: the 'prestito', a type of loan that was repaid with interest. This innovation in finance allowed the Venetians to borrow money from investors at a fixed rate of interest, which in turn enabled them to finance their military operations and expand their trade empire.