Answer:
The primary reason the US advocated the Open Door Policy was to protect and broaden US trade with China. This policy was put into effect in the early 20th century after the Boxer Rebellion in China. It hastened the end of the last dynasty in Chinese history.
Communism
This is an example of central planning in which everything is directed by the government. These types of economies tend not to do well because as the question states the incentive for individuals is taken away.
I just took the test, the correct answer is
an international entity that monitors public health across the world = world health organization
a communication tool used to alert the world about Severe Acute Respiratory Syndrome (SARS) = Internet
means through which the world community was involved in the containment of the Ebola virus = public awareness programs
hope this helps
The rise of the Ottoman Empire