Open door policy refers to the United States policy established in the late 19th century and the early 20th century that would allow for a system of trade in China open to all countries equally. This policy was enunciated (proclaimed) by John Hay who was the secretary of state of the United States of America.
Basically, the open door policy sought to keep China open to trading with all other countries on an equal basis and without bias towards any of the imperial powers such as Germany, France, Britain, Japan and Russia. It prevented all of the aforementioned countries of being dominant or having a total control of the Chinese economy.
Anthesteria and Parentalia are mystic rituals common to the ancient Greeks and Romans. These rituals are usually done in the closet and away from public glare.
The rituals involve appeasing the dead by inviting them for dinner.