Answer:
Explanation:
Natural fortifications also helps defend a country. For example the Alps in Italy defends them very well. Rivers can also be a defensive position a country can fall back to. So no, fortifications and defenses arent the only thing. Nature is able to help too.
Answer: Concerns over the Cold War affected these two countries' space endeavors.
After the Soviet Union successfully launched the first satellite, Sputnik, into space, the US was concerned that the Soviet Union would utilize this technology to launch nuclear weapons from orbit.
Explanation: Following World War II, the Cold War was a period of geopolitical tension between the United States and the Soviet Union, as well as their respective allies, the Western Bloc and the Eastern Bloc.
