Answer:
I believe Japan
Explanation:
After WW2, Japan went through a rebuilding phase through post- WW2 to the Cold War ending. With the help of America supplying aid to Japan, in hopes of slowing the spread of communism westward, the US rebuilt japan in a sort of Democratic form of a nation, thus resulting in one of the wealthiest nations in the world.
He supported it because he believed that the powers enumerated in it balance each other out and nobody could become tyrannical by exploiting it. He refers to it as an open door because it can be amended meaning that if something needs to be changed because the spirit of the time has changed, it can be done while keeping the good things.
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Conquistador in means to conquer
