Inventors such as robert mccormick and eli whitney were part of the a. age of industrial entrepreneurs b. marketing era c. colonial era d. pre-colonial age

4 copper and gold, the california gold rush is why im pretty sure.

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.