Which 1899 statement established america's right to trade with china without interference from european nations?
a. the monroe doctrine eliminate
b. the fourteen points
c. the open door policy
d. the roosevelt corollary to the monroe doctrine

The correct answer is C.

The Open Door Policy was a multilateral agreement approved in the last decade of the 19th century and the beginning of the 20th century, and promoted by the US, in order to regulate the trade activities of colonial powers with China.

All countries were equally allowed to participate in such trade but regulations were established to limit competing interests and interferences.