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.
Following WWII, the United States and the Soviet Union were the two most powerful nations in the world. WWI devastated Europe with many lives being lost as well as destruction to the landscape. WWII was even more destructive, both economically and politically exhausting great nations like France, UK, and Germany. Stalin, Roosevelt, and Churchill met at the Yalta Conference in 1945 to discuss the situation of postwar Europe. This later lead to a separation of Eastern Europe, (which went into Soviet hands) and Western Europe which America financially aided and sent supplies to to help rebuild.
Supreme Power or Authority.
Timelines help us line up when things happened, like if you were doing a timeline of your life for example, mark where things happened in order like when you were born, first word, first step, ect ect. Its just a way to put things in order.
