Final answer:
The fresco 'Effects of Good Government in the City and in the Countryside' was painted by Ambrogio Lorenzetti, located in the Palazzo Pubblico of Siena and created between 1337-1340.
Step-by-step explanation:
The fresco series titled Effects of Good Government in the City and in the Countryside was painted by Ambrogio Lorenzetti. These frescoes were created between 1337 and 1340 and are located in the Sala della Pace, also known as the Sala dei Nove, which translates to the Hall of Peace or the Hall of the Nine, in the Palazzo Pubblico of Siena. Lorenzetti's work is notable for depicting the influence of good and bad governance on both urban and rural life during the late medieval period. The representation of an orderly, prosperous city and a tranquil, productive countryside highlights the benefits of fair leadership, while the companion piece shows the decay and suffering caused by tyranny.