A young history and geography professor stands at the blackboard, engaging his students with a lesson on the world map displayed behind him 
A young history and geography professor stands at the blackboard, engaging his students with a lesson on the world map displayed behind him --v 4
A young history and geography professor stands at the blackboard, engaging his students with a lesson on the world map displayed behind him
a man standing in front of a blackboard with a world map on it
a bearded man standing in front of a blackboard with a world map
a man standing in front of a world map
a man standing in front of a map