In roman times most people lived in small cities, while during the middle ages most people lived in the countryside. all of the following are reasons for this change except
a. people fled the urban centers because they had become too crowded and unsanitary
b. the city no longer was a center of government
c. the cities came under attack from outside invaders
d. the trade-based economy of the city declined

monitor contract compliance and results of forestry activities to assure adherence to government regulations.  

plan and supervise forestry projects, such as determining the type, number and placement of trees to be planted, managing tree nurseries, thinning forest and monitoring growth of new seedlings.  

establish short- and long-term plans for management of forest lands and forest resources.  

determine methods of cutting and removing timber with minimum waste and environmental damage.  

supervise activities of other forestry workers.

by the way there is no video here.

newly independent countries of the former ussr