How did new scientific knowledge help the building of the Panama Canal? Fewer workers got sick from malaria and yellow fever. Radios helped workers stay in touch with their families. Better nutrition led to more work being done by laborers. Airplanes were able to deliver supplies more quickly.

Which statement describes the primary purpose of the european union? question 1 options: to protect european nations in the event of another world war to work together to strengthen europe and benefit all member nations to prevent alliances from forming between member nations to share resources and make economic trade easier between coal and steel companies