2. Why was the United States motivated to establish the Open Door Policy?

The United States was motivated to establish the Open Door Policy because it provided economic gain and power. This guaranteed commerce with China, which the US wanted as it would grant them a lot of power and money, and they did not want any other country to have it, so they took it.

The policy supported equal privileges for all the countries trading with China and reaffirmed China's territorial and administrative integrity.