Which was the main goal of the Open Door Policy?

1.to ensure China maintained its independence
2.to protect US trade interests in China
3.to ensure imperialist countries could trade equally with China
4.to guarantee the United States exclusive trading rights with China

explanation:

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a phrase from a poem by ralph waldo emerson about the battle of lexington and concord. emerson's words read, “here once the embattled farmers stood / and fired the shot heard round the world.”

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the united states broke it's neutrality was the constant german sinking of trading vessels resulting in the loss of lives, one example would be the lusitania.