(A) European nations would have unlimited trade in the US.
(B) Japan would have to sign treaties with the US.
(C) ** Chinese markets would remain available to the US.
(D) The Philippines would stay a US territory.
EXPLANATIONS BELOW
Concept note-1: -The Open Door policy was a statement of principles initiated by the United States in 1899 and 1900. It called for protection of equal privileges for all countries trading with China and for the support of Chinese territorial and administrative integrity.
Concept note-2: -Roosevelt inherited the open door idea from his predecessor William McKinley, just as he inherited Hay as secretary of state, and although he observed the policy’s defects, he accepted it as the basis for American relations in the Far East.
Concept note-3: -These Open Door Notes aimed to secure international agreement to the U.S. policy of promoting equal opportunity for international trade and commerce in China, and respect for China’s administrative and territorial integrity.