Span of control means that each individual will be assigned to only one supervisor. Hope this helped :)
Im pretty sure its c. England and France:)
<span>cause american established a sphere of influence instead of creating the Open Door policy, american only become part of China's problems. It may have made the Chinese people resent us more. By establishing the Open Door policy, we soothed Chinese concerns AND secured our economical strength in China because we did not have to actively compete with other spheres of influence.</span>