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The main countries involved in World War 2 (1939 - 1945) (there were a lot more countries involved, but these are the major ones): Germany, Russia, Britain, United States, France, Italy and Poland. The main countries involved in the Cold war (started roughly in the late 1940s): United States, USSR (Russia), Britain
some countries were trying to help but others didn't care what was going on they were just happy they were not involved
Because the Sputnik program ended with Sputnik 3. Albeit there was a Sputnik 40 and 41 but these were to commemorate the 40th anniversary of Sputnik 1.
Basically every country who was involved in the war. Also many neutral countries were involved in rescue attempts.
127 The number of countries involved in the Olympic Games is 205.
USSR
The Russians
Spain and the US.
The US Apollo projects were geared toward landing man on the moon. They lasted from 1963 to 1972, with six successful moon landings from '69 to '72. The Russian Sputnik went up in 1957. Both countries were involved in the competitive "Space Race" during those years. Eventually, in 1975, the co-operative Apollo-Soyuz Test Project human spaceflight mission occurred.
World War 1 left the countries that were involved with a major distrust of people from other countries. Resentment was caused in countries such as Germany and Italy who lost land during the war.
During WW2, all the major countries involved used submarines.
The United States and the Soviet Union were the main countries involved in the race to the moon during the Space Race era of the 1960s.
Dwight Eisenhower was the US President.
Sputnik I? The Russian (Soviet Union) satellite? Well, the Soviet Union had successfully launched this satellite, so the Russians were indeed involved. I am pretty sure that only the Soviet Union was involved (even though Sputnik I was part of the Space Race, the American people did not have anything to do with the satellite).
Sputnik 1 (and also the next three Sputnik spacecraft) burned up in the atmosphere during re-entry. There are replicas in many Russian museums and at the Smithsonian Air and Space Museum in Washington.
During WW2, all the major countries involved used submarines.
Several countries had been experimenting with rocketry during the first half of the 20th century. However, the event that triggered the intense competition that became known as the "space race" was the launch by the Soviet Union of Sputnik 1, the first artificial satelite to orbit Earth, on 4 October 1957.