The major reason for this was the fact that many Senators were afraid that membership in the League of Nations would reduce the sovereignty of the United States and its ability to have complete control over its own foreign policy and military actions.
I believe the answer would be C, burning fossil fuels. Oil and gas is made up of the remains of microscopic plankton. Over millions of years the remains become the carbon-rich coal, oil and gas we can use as fuel. When fossil fuels are burned they release carbon dioxide into the atmosphere, thus contributes to global warming.
I know that one of the places was Western Asia.Turky too. Ireland also. But I do not know of a 4th. sorry
"Thanks a bunch! I really need an extra dose of points right now!”
Answer:D) use modern ideas to evaluate the historical context