Camp meetings was the name of the gatherings that happened during the Second Great Awakening.
It was the "Open Door Policy" that was the name of the trading policy that Secretary of State John Hay initiated with China and the European nations that already had a presence there, since the US wanted to benefit from trade with China as well.
Assuming this is about the triple alliance that was created prior to the First World War, then it would be the Central Powers which would be Italy, Germany, and Austria. Not sure what ya put there.